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Avenue of the Saints
High Priority Corridor 2
Map
Avenue of the Saints highlighted in red
Route information
Length563 mi (906 km)
Existed1991–present
Component
highways
Major junctions
South end I-64 / US 40 / US 61 / US 67 in Frontenac, Missouri
Major intersections
North end I-94 at St. Paul, Minnesota
Location
CountryUnited States
StatesMissouri, Iowa, Minnesota
Highway system
← Iowa 26Iowa 27→ Iowa 28
← Route 25Route 27→ Route 28

The Avenue of the Saints is a 563-mile-long (906 km) highway in the Midwestern United States that connects St. Louis, Missouri, and St. Paul, Minnesota. It follows parts of U.S. Route 61 (US 61), Route 27 in Missouri, Iowa Highway 27 (Iowa 27), and Interstate 35 (I-35). The route was proposed in the late 1980s, chosen in 1990, funded in 1991 and completed in 2008.

Route description

[edit]

Missouri

[edit]
At U.S. Route 54 near Bowling Green, Missouri

The southern end of the Avenue of the Saints is at exit 28A on Interstate 64/U.S. Route 40 (I-64/US 40), which is also the southern end of its concurrency with US 61. The Avenue of the Saints heads west, to Chesterfield, crossing I-270. Here, the Avenue of the Saints turns northwest, crosses the Missouri River via the Daniel Boone Bridge. In Wentzville, the route intersects I-70. The western end of I‑64 and the northern end of the concurrency with US 40 is here. The Avenue of the Saints continues north as just US 61, intersects with the western end of I-72 in Hannibal, reaches the northern terminus of its concurrency with US 61, then crosses the Des Moines River into Iowa.

The Avenue of the Saints is co-signed with Missouri Route 27 to the Iowa state line. Prior to its designation as Route 27, the section between US 61 and US 136 was designated Spur US 136. The section north of US 136 was Missouri Supplemental Route B.

Iowa

[edit]

In Iowa, the Avenue of the Saints is a 282-mile-long (454 km)[1] highway, which begins in Lee County where Missouri Route 27 crosses the Des Moines River, and ends at the Iowa state line in Worth County, concurrent with Interstate 35. Construction of the Avenue of the Saints corridor in Iowa was completed on May 23, 2006.

The route runs north from the Missouri state line as just Iowa Highway 27 for about ten miles (16 km), then is co-signed with US 218 until just south of Cedar Rapids, crossing I-80 in Iowa City. This is also the location of the southern end of its concurrency with I‑380, and this concurrency terminates in Waterloo. Near Floyd, US 218 splits off, just after the route starts a concurrency with US 18, running west to its intersection with I-35, where the route turns north again and runs into Minnesota.

In 2001, the Iowa Department of Transportation designated the Avenue of the Saints as Iowa 27. Prior to its creation, motorists wanting to travel the Avenue through Iowa had to follow a lengthy list of directions: (heading north from Missouri) Iowa 394, US 218, I‑380, US 20, Iowa 58, US 218 (again), US 18 and I‑35.

As with many rural expressways in Iowa, the Avenue of the Saints has exit numbers in that state. The exit numbers correspond to the underlying U.S. Highway or Interstate Highway – US 218, I-380, US 20, US 18 and I‑35. The section along Iowa 58 in Cedar Falls has no exit numbers, and the separate section south of Donnellson has one numbered exit—the northbound one to US 218 south—based on Iowa 27's mileage.

Minnesota

[edit]
Main article: Interstate 35 in Minnesota

In Minnesota, the Avenue of the Saints is officially routed along I-35 and I-35E for the entirety of its length in that state, but is not marked anywhere within the state. The route runs straight north, crosses I-90 in Albert Lea, and runs to its northern end in St. Paul, shortly after crossing the Mississippi River via the Lexington Bridge.

History

[edit]

The Avenue of the Saints was the concept of businessman Ernest Hayes of Mount Pleasant, Iowa who in the 1980s envisioned a four-lane highway between St. Paul and St. Louis.[2] It was named by Gary Smith, who at the time was Executive Director of the Southeast Iowa Regional Planning Commission. Smith and Hayes convened a group of area business and political leaders, who organized an effort to convince the Iowa Department of Transportation to study the idea, which they did in 1988. Several politicians endorsed the idea, including then-mayor Tom Vilsack of Mount Pleasant, Senator Chuck Grassley of Iowa, and Congressmen David Nagle and Fred Grandy of Iowa and Dick Gephardt of Missouri.

By the end of 1989, four possible routes for the Avenue of the Saints were under consideration by the Federal Highway Administration. Two of the rejected routes would have followed US 52 and US 63 from St. Paul through Rochester, Minnesota, to Waterloo, Iowa. The third rejected route would have followed US 61 from St. Paul through La Crosse, Wisconsin, and Dubuque, Iowa to Davenport, Iowa and US 67 from Davenport, crossing the Mississippi River through western Illinois to Alton, Illinois and crossing the Mississippi and Missouri rivers to St. Louis.

In 1990 the FHWA chose its route for the Avenue of the Saints: the signed highway would follow the existing Interstate 35 from St. Paul to a point south of Clear Lake, Iowa; U.S. Route 18 to Charles City, Iowa; U.S. Route 218 to Cedar Falls, Iowa; U.S. Route 20 and Iowa Highway 58 around Cedar Falls and Waterloo, Iowa; Interstate 380 from Waterloo through Cedar Rapids to Interstate 80 near Coralville, Iowa and Iowa City, Iowa; U.S. Route 218 to Donnellson, Iowa; Iowa Highway 394 and Route B to Wayland, Missouri; and Interstate 64 and U.S. Route 61 from Wayland to St. Louis.

The Intermodal Surface Transportation Efficiency Act of 1991 made the Avenue of the Saints an official "high-priority corridor," and signs were put along the route by the end of the year. At that time the only four-lane segments were I‑35, I‑380, and I‑64; US 20 around Waterloo; US 218 from I‑80 to Iowa 22 near Riverside, Iowa; and two segments of US 61 in Missouri (from La Grange to New London and from Bowling Green to St. Louis). As a cost-saving measure, the government decided to build the Avenue of the Saints to expressway standards—with intersections at rural roads—rather than to full freeway standards. Freeway segments would be built around cities that needed to be bypassed.

After the routing was approved, both Iowa and Missouri began constructing new four-lane segments. Iowa opened bypasses around Waverly (1998), Mason City (1999), Charles City (2000), Mount Pleasant (2001), and Donnellson (2004). A four-lane link between I‑35 and I‑380 was completed with the opening of a segment near Nashua in November 2003. Missouri completed four-lane segments from New London to Bowling Green in November 2000, and from Canton to La Grange in 2003.

In 2001, the Iowa Department of Transportation gave the Avenue of the Saints its own highway number: Highway 27 (Iowa 27). The number was added as an additional number to the existing routes; however, after the Donnellson bypass opened in 2004, Iowa Highway 394 was decommissioned and Iowa 27 is now a stand-alone highway south of the split with US 218. A new four-lane bridge across the Des Moines River was opened at the end of 2004, replacing an existing toll bridge operated by the Wayland Special Road District. A new four-lane road between the bridge and US 61 south of Wayland, Missouri opened on the same day; it was numbered by Missouri as Route 27 to match Iowa's number for the Avenue of the Saints.

In June 2005, a four-lane segment from the end of the Mount Pleasant bypass to the junction with Iowa Highway 16 east of Houghton was opened to four lanes of traffic. The segment of Iowa 27 between the split with US 218 and the Des Moines River bridge opened to four lanes on August 25, 2005.[citation needed] The last remaining segment in Iowa was opened to traffic on May 23, 2006.[3]

In 2007, an interchange was installed at Route C in Moscow Mills, Missouri. This was later done to Route U and South Lincoln Drive as well.[citation needed]

On July 25, 2008, the final nine miles (14 km) of highway between the Lewis—Clark county line and Wayland, Missouri, was open to four-lane traffic. A ceremony was held at the intersection of US 61 and Route 27 to commemorate the completion of the four-lane highway in Missouri. The Avenue of the Saints is now complete from St. Paul to suburban St. Louis.

As a result of the narrow lanes and constant problems with the aging westbound structure, MODOT started studies for a new replacement of the westbound Daniel Boone bridge in around 2001 or 2002. Funding was finally unveiled in 2011,[4] and in November 2012 a design-build contract was awarded to the Walsh-Alberici joint venture team with designer Burns & McDonnell. Construction started in 2013 on a girder bridge, located upstream of the two existing bridges. All four eastbound lanes were routed onto the new bridge on June 28, 2015. The new bridge also features a bike/pedestrian attachment, which connects the Katy Trail to the Monarch Levee Trail.[5]

The Iowa Department of Transportation rebuilt the Avenue of the Saints interchange with I‑80 and I‑380/US 218/Iowa 27 in Coralville. As the Eastern Iowa region has grown, traffic has increased, and the current arrangement of the interchange with its cloverleaf ramps has been deemed unsafe. The interchange was rebuilt as a turbine interchange, which will eliminate weaving. The project was completed in August 2023 after 5 years of the project.[6][7]

Future

[edit]

The Missouri Department of Transportation (MoDot) has published initial maps for the Hannibal Expressway, a bypass around Hannibal, Missouri.[8] According to the maps, the Hannibal Expressway would depart from US 61 south of Hannibal, travel in a northwesterly direction toward the Rocket Junction where it would intersect with US 36/I-72 and US 24 West. The Hannibal Expressway would then travel along the current US 24 East alignment and re-connect with US 61 four miles (6.4 km) north of the Rocket Junction. The "Hannibal Expressway" project is unfunded. There are seven stoplights along US 61 in Hannibal: Red Devil Road/Warren Barrett Drive, Market Street (Business 61), Highway MM (Business 36), West Ely Road, I‑72/US 36, Stardust Drive/Pirate Pride, and Route 168.

Major intersections

[edit]

The segment that concurs with US 61 is unsigned and has multiple at grade intersections.

StateCountyLocationmi[1][9]kmExit[1][9]DestinationsNotes
MissouriSt. LouisFrontenac0.0000.000

 I-64 east / US 40 east		Continuation east beyond interchange; southern end of I-64 and US 40 concurrencies
28A
 US 61 south / US 67 (Lindbergh Boulevard)		Southern terminus of the Avenue of the Saints; southern end of US 61 concurrency
0.5220.84027Spoede Road
Town and Country2.0603.31526Ballas Road
2.403–
2.390		3.867–
3.846		25 I-270 – Tulsa, Chicago, Memphis
4.0816.56824Mason Road
5.0368.10523Maryville Centre RoadNo eastbound exit
5.7199.20422 Route 141 (Woods Mill Road)
Chesterfield6.83611.00121Timberlake Manor Parkway
7.95112.79620Chesterfield ParkwayWestbound exit and eastbound entrance only
8.42713.56219B Route 340 (Olive Boulevard, Clarkson Road)
9.04714.56019AChesterfield Parkway
11.11917.89417Boone's Crossing
11.91319.17216Long RoadWestbound exit and eastbound entrance only
13.61821.91614Spirit of Saint Louis BoulevardWestbound exit and eastbound entrance only
14.51223.355Chesterfield Airport RoadEastbound exit and westbound entrance only
Missouri River15.80325.432Daniel Boone Bridge
St. CharlesWeldon Spring16.33826.29311Research Park CircleNo westbound entrance
17.53428.21810 Route 94 – St. CharlesWestbound exit via Exit 9
O'Fallon18.27329.4089 Route K
21.99835.4026 Route DD (WingHaven Boulevard)
​24.03438.6794 Route N
Lake St. Louis25.22940.6022Lake St. Louis Boulevard
Wentzville26.83443.1851CProspect Road
28.26745.4911A-B

 I-64 ends / I-70 / US 40 west – Kansas City, St. Louis		Northern end of I-64 and US 40 concurrencies; I-70 exits 210A-B; cloverleaf interchange
28.66246.127Pitman AvenueNorthbound exit and southbound entrance only
29.50547.484 Route A (Wentzville Parkway)
31.82551.217 Route P (Peine Road) – Flint Hill
LincolnMoscow Mills37.02359.583 Route U (Crossroads Boulevard)
39.70963.905 Route C – Moscow Mills, Old Monroe
Troy40.00064.374Lincoln Avenue South
42.55768.489Old Cap au Gris RoadNorthbound exit and entrance only
43.22169.557 Route 47 – Troy, Winfield
Module:Jctint/USA warning: Unused argument(s): exit
PikeEolia61.09998.329 Route D / Route FF – Eolia
Bowling Green72.799117.159
 US 61 Bus. / Route 161 – Ashley
75.100120.862 US 54 – Louisiana, Mexico
​76.285122.769
 US 61 Bus. / Route UU – Bowling Green
Frankford86.668139.479 Route B / Route C / Route ZZ – Frankford
RallsNew London93.648150.712
 Route 19 / US 61 Bus. – Center
95.430153.580
 US 61 Bus.
MarionHannibal103.463166.508
 US 36 Bus. / Route MM		Southern end of US 36 Bus. concurrency
104.113167.554




 I-72 east / US 36 / Route 110 (CKC) / US 36 Bus. ends / Great River Road south – Monroe City, St. Joseph, Springfield		Northern end of US 36 Bus. concurrency; southern end of Great River Road concurrency; I-72 begins at interchange. Access to Downtown Hannibal, Mark Twain Historic District, and Hannibal Regional Hospital.
105.126169.184
 Route 168 / Route W / Great River Road north		Northern end of Great River Road concurrency
Module:Jctint/USA warning: Unused argument(s): exit
Barkley111.689179.746 US 24 – Monroe CitySouthern end of US 24 concurrency
Palmyra113.413182.521
 US 61 Bus. – Palmyra
116.251187.088

 US 61 Bus. / Route 168 / Great River Road south – Palmyra		Southern end of Great River Road concurrency
​123.855199.325
 Route 6 west – Edina, Taylor
Taylor124.922–
125.199		201.042–
201.488
 US 24 east – Quincy, Illinois		Northern end of US 24 concurrency
LewisLa Grange130.588210.161

 US 61 Bus. / Route B / Great River Road north – La Grange		Access to Wakonda State Park; northern end of Great River Road concurrency
133.105214.212
 US 61 Bus. / Route C – La Grange
Canton138.464222.836
 US 61 Bus. / Route P – Canton		Access to Culver-Stockton College
Module:Jctint/USA warning: Unused argument(s): exit
139.205224.029
 Route 16 to Route 81 – Canton, Monticello		Access to Lewis County Port
142.220228.881

 US 61 Bus. / Route B / Great River Road south		Southern end of Great River Road concurrency
Clark​155.658250.507


 US 61 north / Great River Road north / Route 27 begins – Keokuk		Northern end of US 61 and Great River Road concurrency; southern end of Route 27 concurrency
Wayland158.397254.915 US 136 – Kahoka
Des Moines River165.784
0.000		266.803
0.000

 Route 27 ends / Iowa 27 begins; Missouri–Iowa state line
IowaLeeCharleston Township10.39516.72910
18
 US 218 south – Keokuk		Southern end of US 218 concurrency; exit numbers follow US 218
Donnellson12.32219.83019 Iowa 2 – Donnellson, Fort Madison
Marion Township22.40936.064 Iowa 16 – Denmark, Houghton
HenryMount Pleasant33.31253.61040255th Street, Old Thresher's Grounds
34.99856.32442



 US 34 east / Iowa 163 east / US 34 Bus. / US 218 Bus. – Mount Pleasant, Burlington		Southern end of US 34 and Iowa 163 concurrencies; signed as Exits 42A (east) and 42B (west)
38.87262.55845

 US 34 west / Iowa 163 west – Ottumwa		Northern end of US 34 and Iowa 163 concurrencies; northbound exit and southbound entrance only
38.87262.55845




 US 218 Bus. (Iowa 438) to US 34 west / Iowa 163 west – Ottumwa		Southbound exit and northbound entrance only
Olds37.09659.700 Iowa 78 – Olds, Winfield, WaylandAt-grade intersection
WashingtonOregon Township59.23095.32166 Iowa 92 – Washington, Columbus JunctionAlso provides access to Ainsworth and Cotter
62.609100.75970 CR G36
Riverside72.721117.03380 Iowa 22 – Kalona, Lone Tree
JohnsonLiberty Township77.448124.64085Hills
West Lucas Township81.622131.35889 CR F50 (Riverside Drive) – Iowa City Municipal Airport
Iowa City83.232133.94991 Iowa 1 – Kalona
85.475137.55993 CR F46 (Melrose Avenue) – University Heights
Coralville88.847142.98597
0
 I-80 / I-380 begins – Iowa City, Davenport, Des Moines		Southern end of I-380 concurrency; northbound exit number follow the mileage of US-218 and is signed as 97; southbound exit number follow the mileage of I-380 and is signed as 0
Coralville–North Liberty line90.887146.2682Forevergreen Road
North Liberty92.893149.4974 CR F28
Jefferson Township99.705160.46010 CR F12 – Swisher, Shueyville
LinnCedar Rapids102.663165.22013Ely, The Eastern Iowa Airport
105.176169.26416
 US 30 / US 151 / US 218 north – Mt. Vernon, Tama		Northern end of US 218 concurrency; northbound exits signed 16A (east) and 16B (west)
106.432171.2861733rd Avenue SW – Hawkeye Downs
107.176172.48318Wilson Avenue SW
108.262174.23119A

 To US 151 Bus. / Diagonal Drive / 5th Avenue SW – Downtown Cedar Rapids		Northbound exit and southbound entrance only
108.594174.76519B-C
 US 151 Bus. (1st Avenue W) / 1st Street W – Veterans Memorial Stadium, Kingston Stadium		No southbound entrance, northbound exit signed as Exit 19C
109.008175.43120A

 To US 151 Bus. / 1st Street East – Downtown Cedar Rapids		Southbound exit and northbound entrance only
109.501176.22520B 7th Street E – U.S. Cellular CenterAccess to Mercy Medical Center and St. Luke's Hospital
110.412177.69121H Avenue, J Avenue
11.19518.01722Coldstream–29th Street, Glass Road – 32nd Street
112.220180.6012342nd StreetSouthbound exit from Exit 24
112.728–
113.208		181.418–
182.191		24 Iowa 100 (Collins Road) / Blairs Ferry RoadSigned as Exits 24A (Iowa 100) and 24B (Blairs Ferry Road) northbound
Hiawatha114.119183.65725Boyson Road
Monroe Township117.696189.41328 CR E34 – Toddville, Robins
Center Point124.673200.64235 CR W36
BentonUrbana130.716210.36741Urbana
132.374213.03543 Iowa 150 – Vinton, Independence
BuchananJefferson Township138.803223.38249Brandon
144.197232.06355 CR V65 – Jesup
Black HawkFox Township151.071243.12562 CR D38 – Gilbertville
Poyner Township153.862247.61765
 US 20 east – Dubuque		Southern end of US 20 concurency
155.298249.92866Raymond, Gilbertville
Evansdale157.206252.99968Evansdale Drive – Elk Run Heights
159.474256.64970River Forest Road
Waterloo160.282257.94971
232
 I-380 north / US 218 – Waterloo, La Porte City		Northern end of I-380 concurrency;
northbound signed as Exits 71A (north) and 71B (south);
southbound signed as Exits 232A (south) and 232B (north)
162.064260.817230 Iowa 21 (Hawkeye Road) – Dysart
163.572263.244229Ansborough Avenue
165.104265.709227 US 63 (Sergeant Road) – Hudson
Hudson167.164269.024225

 US 20 west / Iowa 58 south – Cedar Falls		Northern end of US 20 concurrency; southern end of Iowa 58 concurrency
Cedar Falls167.568269.675Ridgeway AvenueAt-grade intersection; future interchange
168.569271.286181Viking RoadFormer at-grade intersection; intersection rebuilt into single point urban interchange
169.715273.130Greenhill RoadAt-grade intersection; future interchange
170.862274.976183University Avenue (to Iowa 934)
171.468–
171.658		275.951–
276.257		184 18th Street, Waterloo RoadAccess to Sartori Memorial Hospital
172.945278.328—


 US 218 south / Iowa 57 west / Iowa 58 ends – Waterloo, Waterloo Regional Airport		Northern end of Iowa 58 concurrency; southern end of US 218 concurrency
174.597280.987189Lone Tree Road
BremerWaverly184.363296.703198
 US 218 Bus. (Iowa 116) – Waverly		Access to Waverly Health Center
188.635303.579203 Iowa 3 – Waverly, Shell Rock
190.676306.863205
 US 218 Bus. – Waverly Municipal Airport
Plainfield197.890318.473212 Iowa 188
ChickasawNashua205.194330.228220

 Iowa 346 east / CR B60 west
FloydCharles City214.416345.069218

 US 18 east / US 218 Bus. / CR T64 – New Hampton		Southern end of US 18 concurrency
217.992350.824214 Iowa 14 – Greene
220.116354.242212
 US 218 Bus. / CR B35
Floyd222.552358.163209

 US 218 north / CR T44 south – Osage, Charles City		Northern end of US 218 concurrency; exit construction from 2023-2024; formal intersection
Rock Grove Township237.250381.817195 CR S70 – Nora Springs
Cerro GordoPortland Township242.387390.084190 CR S56 (California Avenue)
Mason City246.439396.605186
 US 18 Bus. / US 65 – Downtown Mason City, Rockwell
Lake Township249.449401.449183 CR S36 (Eisenhower Avenue)
253.900408.612178
190
 I-35 south – Des Moines		Southern end of I-35 concurrency
Clear Lake256.349412.554193
 I-35 Business Loop north / CR B35 – Mason City
257.219413.954194

 US 18 west / I-35 Business Loop south / Iowa 122 – Mason City, Clear Lake		Northern end of US 18 concurrency, access to Mercy Medical Center - North Iowa
Lincoln Township260.910419.894197 CR B20
WorthDanville Township266.831429.423203 Iowa 9 – Manly, Forest City
Brookfield Township271.845437.492208 CR A38 – Joice, Kensett
Hartland Township277.865447.180214 CR 105 – Lake Mills, NorthwoodFormer Iowa 105
 281.689
0.000		453.335
0.000
 Iowa 27 ends; Iowa–Minnesota state line; northern end of Iowa 27 concurrency
MinnesotaFreebornFreeman Township2.492–
2.522		4.010–
4.059		2 CR 5
5.2768.4915 CR 13 – Twin Lakes, Glenville
Albert Lea7.987–
7.995		12.854–
12.867		8
 I-35 BL north / US 65 – Glenville
11.49818.50411 CR 46
12.560–
12.654		20.213–
20.365		12

 I-35 BL south / US 65 south		Southbound exit and northbound entrance
Bancroft Township13.24721.31913 I-90 – La Crosse, Sioux FallsSigned as Exits 13A (east) and 13B (west)
Clarks Grove18.74530.16718
 MN 251 east – Hollandale
Geneva Township22.96336.95522 CR 35 – Hartland, Geneva
SteeleSummit Township26.64042.87326 MN 30 – New Richland, Blooming Prairie
Somerset Township32.81752.81432 CR 4 – Hope
Owatonna39.98164.34340
 US 14 / US 218 south – Waseca, Rochester, Austin		Former southern end of US 14 concurrency
41.76667.21641Bridge Street
42.50968.41242 CSAH 45 / CSAH 2Signed as Exits 42A (east) and 42B (west); former northern end of US 14 concurrency
43.524–
43.548		70.045–
70.084		43 CSAH 34 (26th Street)
45.520–
45.544		73.257–
73.296		45 CSAH 9 – Clinton Falls
Medford48.05777.34048 CSAH 12 / CSAH 23 – Medford
RiceFaribault55.59089.46355 I-35 BL / CSAH 48 / Lyndale Avenue – FaribaultNorthbound exit and southbound entrance only
56.91891.60156 MN 60 – Faribault, Waterville
59.10795.12359 I-35 BL / MN 21 – Faribault, Le Center
Forest Township66.696107.33766 CSAH 1 – Montgomery, Dundas
Webster Township69.679112.13769 MN 19 – Northfield, New Prague
ScottNew Market Township76.841123.66476 CR 2 – Elko New Market
DakotaLakeville81.842131.71281 CSAH 70 – Farmington
84.340135.73284 CSAH 60 (185th Street West)
85.509137.61385 CSAH 5 / CSAH 50
85.953138.328–Kenrick Avenue Park and Ride stationBuses only; northbound exit and entrance
86.636139.42786 CSAH 46
Burnsville87.824141.33987Crystal Lake RoadNorthbound exit and southbound entrance only
88.268142.05488A
 I-35W north – Minneapolis		Northbound exit and southbound entrance only


 I-35 ends / I-35E begins – St. Paul		Northbound exit and southbound entrance only; Northern end of I-35 concurrency and southern end of I-35E concurrency
88.794–
88.848		142.900–
142.987		88B CSAH 42
Apple Valley90.615–
90.659		145.831–
145.902		90 CSAH 11
Eagan92.629–
92.649		149.072–
149.104		92 MN 77 (Cedar Avenue) – Zoo
93.772150.91193 CSAH 32 (Cliff Road)
94.906152.73694 CSAH 30 (Diffley Road)
97.123156.30497A CSAH 31 (Pilot Knob Road)
97.433156.80397B CSAH 28 (Yankee Doodle Road)Northbound exit is via Exit 97A
98.559158.61598 CSAH 26 (Lone Oak Road)
Mendota Heights99.667–
99.684		160.398–
160.426		99 I-494Signed as Exits 99A (east) and 99B (west)
101.169–
101.183		162.816–
162.838		101 MN 62Signed as Exits 101A (east) and 101B (west) southbound; formerly MN 110
102.590165.103102
 MN 13 (Sibley Highway) / Great River Road (National Route)		Southern end of Great River Road concurrency
Mississippi River102.630–
102.896		165.167–
165.595		Lexington Bridge
RamseySaint Paul103.346–
103.364		166.319–
166.348		103A
 Shepard Road / Great River Road (National Route)		Northbound exit and southbound entrance; northern end of Great River Road concurrency
103.688–
103.692		166.870–
166.876		103B MN 5 (West 7th Street)
104.464168.119104ARandolph Avenue (CR 38)
104.599–
104.639		168.336–
168.400		104BAyd Mill RoadNorthbound exit and southbound entrance
105.014–
105.038		169.004–
169.042		104CVictoria StreetSouthbound exit and northbound entrance
105.562169.886105St. Clair AvenueSouthbound exit and northbound entrance
106.281–
106.444		171.043–
171.305		106AGrand AvenueNorthbound exit and southbound entrance
106.980172.168106BKellogg BoulevardNorthbound exit and southbound entrance
107.450172.924106C11th Street – State CapitolNorthbound exit and southbound entrance
107.497–
107.614		173.000–
173.188		107

 I-94 / US 10 east / US 52 south / 10th Street, Wacouta Street, US 12 – Minneapolis		Signed as Exits 107A (east) and 107B (west)


 I-35E north / US 10 west		Continuation north beyond interchange; northern end of I-35E concurrency
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

[edit]

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Avenue of the Saints

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The Avenue of the Saints is a four-lane divided corridor in the that connects St. Louis, Missouri, and St. Paul, , spanning approximately 563 miles (906 km) through northeastern Missouri, southeastern and north-central , and southeastern . The route primarily follows upgraded segments of existing highways, including U.S. Route 61 in Missouri, Iowa Highway 27 (overlapping U.S. Route 218 and other alignments) for the 268-mile Iowa portion through communities like Keokuk, Mount Pleasant, Waterloo, and Mason City, and (including I-35E) in . Proposed in 1985 by southeast community leaders, including Mount Pleasant businessman Ernie Hayes, the project aimed to create a continuous high-speed corridor to boost regional connectivity and . The name "Avenue of the Saints" was coined by Hayes along with New Hampton banker Robert Rigler and Warren Dunham to evoke the shared "" of the endpoint cities, drawing on a of thematic designations. Construction began in the early with federal support via the 1989 Transportation Appropriations Act, which provided initial study funding of $400,000; the segment, costing about $541 million (over 80% federally funded), was fully completed on May 23, 2006, with the final two-mile stretch near Keokuk opening that spring. The entire corridor reached completion in 2008, earlier than initial projections of 2020, thanks to advocacy from groups like the SMART Coalition, Senator , and Congressman Kenny Hulshof, who secured earmarks for the portion's final section in Clark County, opened on July 25 of that year; the corridor has been fully operational since, with ongoing maintenance and improvements. As a key , the Avenue of the Saints serves a of about 7 million people and 250,000 businesses across its path, reducing transit times by roughly one hour through alone and enabling efficient freight movement for industries like and distribution. Since its designation as Iowa 27 in 2001, it has spurred economic growth, including over $322.5 million in investments and 2.42 million square feet of new distribution space from 19 firms between 2001 and 2008. The highway supports major employers such as Target and by linking Midwestern markets to national supply chains, while also enhancing and intercity travel along its rural and semi-urban alignment.

Overview

Route Summary

The Avenue of the Saints is a 563-mile (906 km) highway corridor that connects St. Louis, Missouri, with St. Paul, Minnesota. Designated as a high-priority interstate corridor under the of 1991, it facilitates enhanced regional connectivity across the Midwest. The route primarily follows U.S. Route 61 and Missouri Route 27 in Missouri from its southern terminus near to the Iowa border, Highway 27—which overlaps with U.S. Route 218 and Interstate 380—through the central and eastern parts of , and from the Iowa state line to Faribault and I-35E to St. Paul in . This alignment provides a continuous four-lane divided highway designed for efficient north-south travel. Construction to achieve full four-lane status across the entire route was completed by 2008, marking the realization of a multi-state initiative proposed in the late .

Naming and Significance

The name "Avenue of the Saints" originates from the highway's connection between several Midwestern cities bearing names of saints, most prominently its endpoints of , Missouri, and St. Paul, Minnesota, as well as intermediate locales like . The term was coined in 1985 by a trio of visionaries: , businessman Ernie Hayes; New Hampton, Iowa, banker Robert Rigler; and former Iowa director Warren Dunham, who sought to spotlight the proposed corridor as a unifying project. This naming choice evoked the region's French Catholic heritage, evident in place names tracing back to early European settlers, while emphasizing the route's path through saint-honoring communities to foster a sense of shared identity. The designation carries symbolic weight in promoting Midwestern cohesion, serving as a conduit for economic collaboration, , and cross-state partnerships among , , and . By linking urban centers and rural areas, it underscores regional interdependence, facilitating and travel that bolsters local economies—such as through distribution hubs and visitor attractions—while symbolizing a modern "pilgrimage" route for business and leisure. This thematic emphasis on unity helped garner public and political support, transforming the corridor into a of interstate in the heartland. Federal recognition came via the (ISTEA) of 1991, which classified the Avenue of the Saints as a high-priority corridor, unlocking funding and planning momentum across the three states. State-level endorsements followed, with signage incorporating saintly motifs like the —tied to St. Louis's patron, King Louis IX—appearing along the route in the late and expanding notably in 2001, when designated its portion as Highway 27 and adopted a parallel numbering system to enhance visibility and branding.

Route Description

Missouri Section

The Missouri section of the Avenue of the Saints begins at exit 28A of and in Frontenac, a western suburb of . From there, the route follows I-64 northwest for approximately 25 miles through the metropolitan area, crossing the via the Bridge near Weldon Spring before reaching Wentzville. At Wentzville, the designation turns north onto U.S. Route 61, which serves as the primary alignment for the majority of the segment, passing through St. Charles and O'Fallon. Continuing north on US 61, the highway traverses rural northeastern , connecting small towns such as , , , and , while providing efficient access to agricultural and industrial areas along the way. Near , the route passes through the city, paralleling the north toward Wayland. The northern terminus occurs near Wayland in Clark County, where the alignment shifts to the short Missouri Route 27 connector, a four-lane divided highway that crosses the into . The entire section, co-designated with US 61 for much of its length especially near the area, spans roughly 210 miles and has been fully four-laned since the completion of its final nine-mile segment between the Lewis-Clark county line and Wayland in 2008. This upgrade transformed the corridor into a high-capacity expressway, supporting regional and through predominantly rural landscapes interspersed with periodic urban and suburban development.

Iowa Section

The Iowa portion of the Avenue of the Saints measures 268 miles (432 km) and represents the longest segment of the overall corridor. This section was fully completed as a four-lane divided highway on May 23, 2006, with the opening of the final two-mile stretch near Keokuk. The route enters from Missouri in Lee County, crossing the near Keokuk as U.S. Route 218, and heads north through rural southeastern . It passes agricultural landscapes and communities including Fort Madison and Mount Pleasant, before approaching the Iowa City area. Near Williamsburg, the highway reaches a major interchange with Interstate 80, marking the transition to Interstate 380 (co-designated as Iowa Highway 27), which bypasses Iowa City to the west and skirts Cedar Rapids without entering the downtown cores. Interstate 380 carries the corridor northwest through eastern Iowa's urban and suburban zones to Waterloo, where it meets U.S. Route 20 at a key junction. From there, the route shifts to U.S. Route 218, proceeding north through Cedar Falls and into more rural terrain via Waverly and Charles City. The path then aligns with U.S. Route 18 near Clear Lake, heading west to end at the interchange with Interstate 35 in Worth County. Throughout its length, the Iowa segment consists of a continuous four-lane divided designed for efficient across the state's agricultural heartland, with controlled access and interchanges facilitating movement between rural farmlands and regional centers. Special brown-and-white "Avenue of the Saints" signs are posted alongside standard route markers to highlight its thematic identity. Traffic volumes peak in the Waterloo-Cedar Falls area due to its role as a regional hub.

Minnesota Section

The Minnesota section of the Avenue of the Saints follows Interstate 35 northward from the Iowa state line near Albert Lea, passing through communities such as Faribault before reaching the Twin Cities metropolitan area. There, the route transitions to Interstate 35E through St. Paul, terminating at the interchange with Interstate 94. This alignment utilizes the existing interstate infrastructure, which was largely constructed in the late 1950s and 1960s, with the first segment between Owatonna and Medford opening to traffic in 1958. Spanning approximately 98 miles, the Minnesota portion integrates seamlessly into the broader interstate network, providing direct connectivity to the region's urban core without dedicated signage for the Avenue of the Saints designation. In the Twin Cities, it intersects near Lakeville, facilitating access to surrounding suburbs and airports. The route's completion as part of the full corridor aligned with the overall Avenue of the Saints project, which reached its final Iowa segment in 2006, though Minnesota's interstate alignment predates this by decades.

History

Proposal and Planning

The idea for the Avenue of the Saints originated in the 1980s, when , businessman Ernest Hayes proposed a four-lane highway linking , , and St. Paul, Minnesota, to stimulate along the corridor by improving transportation connectivity between the two cities. Hayes, who frequently traveled the route to visit family, envisioned it as a major north-south artery bypassing slower two-lane roads and fostering regional trade and tourism. The formal proposal gained momentum through regional advocacy groups, culminating in the Federal Highway Administration's selection of the route in 1990. Later support came from organizations like the Tri-State Development , formed in 1996 involving leaders from , , and . This alignment followed existing highways, including U.S. Route 61 in , U.S. Route 218 and Iowa Highway 27 in , and , spanning approximately 532 miles with an estimated initial construction cost of $358.5 million. The 1989 Transportation Appropriations Act provided initial seed funding of $400,000 for planning studies. The (ISTEA) of 1991 designated the corridor as a high-priority national project. officially designated its portion in 1991, followed by in 1992 and in 1994, aligning state highway systems with the federal vision. Funding for the project combined federal appropriations with state resources, with ISTEA and subsequent legislation like the Transportation Equity Act for the (TEA-21) allocating approximately $200 million in federal aid for key segments, including $14.8 million for the Mason City bypass in . State contributions were made primarily through revenue bonds, allocations, and general transportation funds to cover non-federal shares and enable the upgrade of existing roadways to four-lane divided standards. In , the total project cost was approximately $541 million, with over 80% funded federally and the state's share supported by a dedicated increase and bond issuances. Planning faced several challenges, including debates over alignment in Iowa to minimize disruption to urban areas and agricultural lands, where alternative routes along U.S. Highways 52 and 63 were rejected in favor of U.S. 218 to balance accessibility and efficiency. Environmental reviews were required for sensitive segments, particularly near crossings like the Champ Clark Bridge between and , assessing impacts on wetlands, wildlife habitats, and water quality under the . These processes, including streamlined environmental assessments for upgrades, ensured compliance while addressing concerns from local stakeholders about floodplain alterations and .

Construction Milestones

The construction of the Avenue of the Saints involved a multi-state effort to develop a continuous four-lane highway corridor spanning approximately 550 miles from , , to St. Paul, , with work progressing in phases from the early through 2008. Initial upgrades focused on widening existing routes and building new segments to create a divided, limited-access roadway, supported by federal funding and state transportation departments. The project transformed two-lane rural highways into a modern expressway, facilitating improved regional connectivity. In Missouri, construction emphasized upgrades along U.S. Route 61 and the newly designated Route 27 in the northern portion, aligning with the corridor's southern endpoint. A key milestone was the opening of a new four-lane bridge across the on December 8, 2004, which connected the and segments and was numbered Route 27 to match Iowa's parallel designation; this bridge replaced a tolled structure and marked significant progress toward full four-laning in the state. The remaining 15 miles of two-lane U.S. Highway 61 in northern were upgraded to four lanes by 2008, completing the state's contribution to the corridor. Iowa's segment, covering 268 miles through 13 counties, saw construction begin in the early 1990s on portions of U.S. Route 218, Interstate 380, U.S. Route 18, and , designated collectively as Iowa Highway 27 in August 2001. Upgrades included bypasses and widenings to handle increased traffic, with over 80% of funding from federal sources. The entire portion was dedicated on , 2006, when the final two-mile four-lane stretch near Keokuk opened to traffic, concluding a project that had started more than two decades earlier. The section alone cost approximately $541 million. Minnesota's involvement integrated the corridor with the existing , which was already a four-lane interstate from the Iowa border northward to St. Paul, requiring no major new construction but the addition of Avenue of the Saints signage to denote the route. This integration was finalized as part of the overall project completion in 2008. The full four-lane corridor was celebrated with a ribbon-cutting ceremony on July 4, 2008, at the Iowa-Minnesota border, followed by the opening of the final section on July 25, 2008, in Clark County, Missouri. A late addition to the infrastructure was the replacement of the eastbound span of the Daniel Boone Bridge over the in 2015; this $111 million project, funded by federal and state sources, enhanced capacity on /U.S. Route 61, a key segment of the Avenue of the Saints near .

Maintenance and Improvements

Recent Projects

Since the completion of the original Avenue of the Saints corridor in 2008, several major infrastructure projects have addressed capacity, safety, and connectivity needs along the route. One significant effort was the replacement of the in , which carries I-64 across the as part of the southern terminus of the Avenue of the Saints. The project replaced the deficient 1930s-era westbound structure with a new bridge upstream of the existing eastbound span, completed in late spring 2015 when traffic shifted to the new eastbound lanes, with full project wrap-up including rehabilitation of the repurposed 1980s bridge by the end of 2016. This $111 million design-build initiative widened the crossing to six lanes to accommodate growing interstate traffic volumes of approximately 50,000 vehicles per day, enhancing safety by addressing the original bridge's inadequacy for modern highway standards and reducing collision risks through improved capacity and structural integrity. In , the full reconstruction of the I-80/I-380 interchange near Coralville, where I-380 serves as the Avenue of the Saints alignment via US 218, marked a major upgrade to handle regional freight and commuter flows. This five-year, $369.4 million project, involving the construction of 26 new bridges, removal of 80 lane-miles of outdated pavement, and paving of 113 new lane-miles, concluded ahead of schedule in August 2023 with the opening of all flyover ramps and direct connections. The rebuild added auxiliary lanes and reconfigured the cloverleaf design into a fully directional system interchange, significantly improving , reducing congestion delays by millions of hours annually, and enhancing safety for the corridor's high-volume intersection. Further north in , reconstruction of US 65 (the Avenue of the Saints) through Mason City began in 2024 to modernize this key urban segment. Announced in August 2024, the project initiated full-depth roadway reconstruction from 20th Street Southeast to 19th Street South, incorporating resurfacing, new curb and gutter installations, storm sewer upgrades, and utility improvements like water mains and sanitary sewers. Work progressed in phases through late 2024 and into 2025, with closures between key intersections to facilitate resurfacing and structural enhancements, and the project nearing completion as of November 2025. This aims to boost durability and accessibility while tying into broader corridor leveling efforts between Floyd and Interstate 35. Efforts to incorporate multi-modal features along the Avenue of the Saints gained traction in through proposals emphasizing bike and paths on select segments. The Lit City Blues initiative outlined plans for integrating hike-and-bike trails parallel to the highway, alongside potential rail and river transport links, to foster regional connectivity and non-motorized access without disrupting vehicular priority. These concepts build on existing accommodations, such as the bike/ped path added to the Bridge in 2016, but target expansions in underserved and stretches to promote sustainable travel options.

Ongoing Maintenance

The Iowa Department of Transportation (Iowa DOT) performs routine resurfacing to ensure smooth pavement conditions along the Avenue of the Saints corridor. In 2024, select sections between Floyd and were leveled to address surface irregularities and improve ride quality. This work continued into 2025 with microsurfacing applications near Charles City in Floyd County in early November 2025, providing a thin protective layer to extend pavement life and enhance durability. Signage maintenance for the Avenue of the Saints follows a tri-state agreement among , , and departments of transportation, focusing on the standardized brown-and-white signs that identify the corridor. These signs are inspected regularly and replaced every 10-15 years to maintain visibility and consistency across state lines. Safety initiatives along the route include ongoing guardrail upgrades and the installation of wildlife crossings in rural segments of and , implemented since 2020 to reduce collision risks. These measures, part of broader safety improvement programs, incorporate stronger barriers and underpass structures to accommodate animal movement while protecting motorists. Traffic management is supported by real-time monitoring through 511 traveler information systems operated in all three states, enabling drivers to access updates on conditions, incidents, and delays along the corridor. Average daily traffic volumes range from 10,000 to 50,000 vehicles, varying by segment and reflecting the route's role as a key regional connector.

Economic and Cultural Impact

Regional Development

The completion of the Avenue of the Saints has facilitated the development of industrial sites and business parks across Missouri, Iowa, and Minnesota, enhancing logistics, manufacturing, and distribution capabilities along the corridor. In Iowa, the Avenue of the Saints Development Park, a 75-acre certified site near Charles City at the intersection of the highway and South Grand Avenue, exemplifies this growth; it is shovel-ready with utilities, rail access, and environmental clearances, positioning it to attract logistics and manufacturing operations. The park has been promoted for industrial development since the early 2000s, aligning with the corridor's expansion that added 2.42 million square feet of new distribution space and drew 19 logistics and manufacturing companies between 2001 and 2007. Construction of the highway generated significant employment, with the overall project creating thousands of direct jobs across the three states during its multi-decade build-out, while post-completion facilities have sustained economic activity in key hubs. For instance, in , the distribution center employed 175 workers as of 2008, supporting regional supply chains for plumbing and electrical products. Similarly, the plant in , previously supported around 300 jobs in as of 2008, contributing to ongoing boosts in agribusiness and distribution sectors along the route, including in , where proximity to the enhances agricultural processing and logistics. However, recent years have seen challenges, including the announced closure of the facility in Charles City in December 2025, affecting local jobs. The highway has streamlined interstate commerce by reducing travel times and fostering trade between St. Louis and the Twin Cities, originally envisioned to stimulate regional through improved connectivity. Across Iowa, the four-lane upgrade saves approximately one hour in transit compared to prior two-lane sections, with specific routes like deliveries to Iowa City dropping from 3.5 hours to about two hours, enabling more efficient movement of goods for major retailers such as , which operates a in Mount Pleasant. State investments have further amplified these developments, with committing $541 million to the highway's construction (80% federally funded) and emphasizing biofuels infrastructure along U.S. 218, including ethanol blending stations to support agricultural exports. In , federal allocations of approximately $188 million through 1997 supported corridor projects, bolstering adjacent industrial areas near and spurring over $322.5 million in private capital investments in 's distribution facilities from 2001 to 2007, with ripple effects extending to 's manufacturing base.

Tourism and Connectivity

The Avenue of the Saints serves as a saint-themed corridor that promotes tourism by directing travelers to key cultural and historical sites along its path. In , the route passes through , the boyhood home of , where visitors can explore the and the Mark Twain Cave Complex, drawing literature enthusiasts to the inspirations behind and . Further north in , signage and promotional materials highlight detours to the near Iowa City, a district preserving 19th-century German pietist heritage with sites like the Amana Heritage Museum and communal kitchens that offer immersive experiences in traditional crafts and cuisine. At its northern terminus in the of , the highway connects to urban landmarks such as the in St. Paul and the , encouraging exploration of the region's vibrant arts and history scenes. Promotional efforts underscore the route's role in leisure travel, where families and road trippers pause at interpretive markers and welcome centers to discover local stories tied to the "saints" nomenclature connecting and St. Paul. These initiatives contribute to regional economies. Beyond scenic drives, the highway bolsters connectivity by facilitating access to premier institutions, including the in —reachable via its junction with —and academic hubs like the in Iowa City and . This linkage supports cultural exchanges, enabling easier travel for students, researchers, and medical patients between these centers and promoting collaborative events, conferences, and educational programs across the Midwest. In , groups have pushed for multi-modal enhancements, including extensions parallel to the to expand opportunities connecting and communities. These proposals aim to integrate and paths with the existing roadway, creating a more inclusive network that attracts adventure seekers and supports sustainable travel along the corridor.

Future Developments

Proposed Upgrades

In , the Missouri Department of Transportation (MoDOT) has proposed a four-lane reroute for the Hannibal Expressway bypass along US 61 to circumvent the city of , addressing congestion and safety issues on the existing alignment as part of completing the Avenue of the Saints corridor. This 10-mile access-controlled expressway project, originally evaluated in a 1996 , is currently undergoing a re-evaluation study to update alternatives and impacts, with an estimated cost of $100-150 million (2014 estimate). As of 2024, $2 million in state funding was allocated for initial construction and study phases, and the project remains in planning with public input ongoing as of 2025. At the Minnesota-Iowa border, the Department of Transportation (MnDOT) is conducting the I-35/I-90 interchange corridor study near Albert Lea, planning bridge replacements scheduled for 2030-2031 to address aging infrastructure (built 1968) and support freight and commuter demands in the region. This project is near but not directly on the Avenue of the Saints corridor (US 52). The Department of Transportation ( DOT) has allocated $8 million annually statewide for intelligent transportation systems (ITS) equipment through the 2025-2029 Transportation Improvement Program (TIP), approved in June 2025, enabling adaptive signals and variable message signs on major corridors including segments of US 218 (Avenue of the Saints). Over $16 million in federal grants, announced in October 2024, supports 28 new DC fast-charging sites along interstate alternative fuel corridors such as I-35 and I-380, enhancing EV infrastructure in central .

Potential Extensions

One emerging proposal for extending the scope of the Avenue of the Saints involves transforming the corridor into a multi-modal network, incorporating rail, , and alongside the existing 563-mile to enhance regional connectivity without physical lengthening of the roadway. In a analysis, advocates suggested developing a line utilizing underused tracks between St. Paul and , with upgrades to existing and less than 200 miles of new construction to serve population centers like (population 121,878), and the Cedar Rapids-Iowa City metropolitan area (population 385,453). This would intersect services at locations such as Red Wing and Winona in , and Burlington and Quincy in and , facilitating access to major medical facilities like the and while promoting economic development in underserved rural areas. Complementary elements include a dedicated bike and hike trail paralleling the highway, capitalizing on Iowa's established and events like to attract tourists and support local economies along the route. River-based enhancements, such as services in the , Fort Madison, and Keokuk, would leverage the for short-haul freight and recreational travel, further integrating the corridor into a broader Midwest transportation ecosystem. These ideas build on the original 1990s planning, which defined the highway's boundaries from to St. Paul but left room for future multimodal expansions to address evolving needs like sustainable mobility. Implementing these alterations faces substantial obstacles, including chronic funding shortfalls exacerbated by short-term federal surface transportation program extensions that create planning uncertainty and limit long-term investments. Environmental concerns also pose barriers, as new rail or could contribute to , increased stormwater runoff, and carbon emissions during construction, requiring compliance with regulations like the and mitigation measures to protect Midwest ecosystems. Despite multi-state coalitions formed during the highway's initial development in the , recent advocacy efforts have not yet secured federal designations, such as status, to expand promotional and funding opportunities beyond the current mileage.

References

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