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U.S. Route 1 in Florida
U.S. Highway 1 (US 1) in Florida runs 545 miles (877 km) along the state's east coast from Key West to its crossing of the St. Marys River into Georgia north of Boulogne and south of Folkston. US 1 was designated through Florida when the U.S. Numbered Highway System was established in 1926. With the exception of Monroe County, the highway runs through the easternmost tier of counties in the state, connecting numerous towns and cities along its route, including nine county seats. The road is maintained by the Florida Department of Transportation (FDOT).
From its national southern terminus in Key West, US 1 carries the Overseas Highway, which is the Keys's main highway, north to the mainland, entering South Florida. From South Florida to Jacksonville, US 1 runs close to the coastline of the Atlantic Ocean and the Intracoastal Waterway, generally east of Interstate 95 (I-95) and west of State Road A1A (SR A1A), running roughly parallel with both roads. North of Jacksonville, US 1 curves inland toward the St. Mary's River as it enters Georgia.
As is the case with all Florida roads with national designations, the entirety of US 1 has a hidden FDOT designation:
Among other designations, US 1 is a designated Blue Star Memorial Highway along its entire route through the state. Markers are placed at various locations, including one in Rockledge and Fort Lauderdale.
US 1 officially begins its northward journey at the Monroe County courthouse at the intersection of Whitehead and Fleming streets in Key West. It proceeds south as Whitehead Street, a two-lane street, until the intersection with Truman Avenue, which takes it east through central Key West. Truman Avenue becomes North Roosevelt Boulevard about a mile (1.6 km) east and remains so until leaving the island; US 1 expands to four lanes along its length. The road follows the northern shore of this section of Key West, then after curving southward, it meets SR A1A head-on at a T intersection before continuing east. This intersection also marks the southern terminus of the Overseas Highway, which US 1 is known by between here and mainland Florida.
After crossing to Stock Island and forming the boundary between the eponymous district and incorporated Key West, US 1 proceeds through unincorporated Monroe County on Boca Chica Key, past Naval Air Station Key West, and Rockland Key, where the Overseas Highway drops down to a two-lane road. It then crosses East Rockland Key, Big Coppitt Key (and its congruous district), Saddlebunch Keys, Sugarloaf Key, Park Key, Cudjoe Key (and its congruous district), Summerland Key, Ramrod Key, Middle Torch Key, Little Torch Key, Big Pine Key (and its congruous district), Scout Key, and Spanish Harbor Key. The highway expands to four lanes as it crosses the Bahia Honda Bridge, then reduces to two lanes as it traverses Bahia Honda Key, Ohio Key, Missouri Key, and Little Duck Key. After Little Duck Key, US 1 enters Knights Key, Boot Key, Key Vaca, and the town of Marathon via the Seven Mile Bridge, thus leaving the lower Keys.
US 1 runs through Marathon as a four-lane road. After Key Vaca, the road becomes two-lane once more and runs through Fat Deer Key, where it forms the northern boundary of the city of Key Colony Beach. It then continues wholly in Marathon through Long Point Key, Crawl Key, and Grassy Key. The road then crosses to Little Conch Key and then Conch Key, both part of the Duck Key district. US 1 then crosses to and traverses Long Key, which is mostly unincorporated except for the city of Layton, which the highway passes through. The road then reaches Craig Key, and then the village of Islamorada including Lower Matecumbe Key, Tea Table Key, Upper Matecumbe Key, and Windley Key. US 1 crosses a drawbridge onto Plantation Key, where it expands to four lanes and then leaves Islamorada as it crosses to Key Largo. Immediately the Overseas Highway enters Tavernier, where it temporarily splits into a pair of one-way roads through the community. Soon, the road enters the community of Key Largo, which also features another pair of one-way roads. At the northern end of the Key Largo district, about two-thirds of the way along the island, US 1 intersects County Road 905 (CR 905), which offers an alternative route out of the Keys via North Key Largo and the Card Sound Bridge. Signage approaching the intersection directs northbound motorists to take this alternative route if the lights on it are flashing. US 1 swings to the northwest, forms the southern boundary of North Key Largo, and becomes a two-lane divided road after the intersection. After crossing the Jewfish Creek Bridge (where it enters unincorporated Monroe County again) and traveling along Cross Key, US 1 crosses Manatee Creek, along with the Miami-Dade County boundary, and reaches the mainland.
For the first 14 miles (23 km) in Miami-Dade County, US 1 is a divided two-lane road bordering Everglades National Park on the west. It is named South Dixie Highway from the county line to Miami. Its first major intersection is with the north end of Card Sound Road south of Florida City. Similarly, to the south, signage directs southbound travelers approaching this intersection to take Card Sound Road if the lights on it are flashing rather than taking US 1 south to Key Largo.
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U.S. Route 1 in Florida AI simulator
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U.S. Route 1 in Florida
U.S. Highway 1 (US 1) in Florida runs 545 miles (877 km) along the state's east coast from Key West to its crossing of the St. Marys River into Georgia north of Boulogne and south of Folkston. US 1 was designated through Florida when the U.S. Numbered Highway System was established in 1926. With the exception of Monroe County, the highway runs through the easternmost tier of counties in the state, connecting numerous towns and cities along its route, including nine county seats. The road is maintained by the Florida Department of Transportation (FDOT).
From its national southern terminus in Key West, US 1 carries the Overseas Highway, which is the Keys's main highway, north to the mainland, entering South Florida. From South Florida to Jacksonville, US 1 runs close to the coastline of the Atlantic Ocean and the Intracoastal Waterway, generally east of Interstate 95 (I-95) and west of State Road A1A (SR A1A), running roughly parallel with both roads. North of Jacksonville, US 1 curves inland toward the St. Mary's River as it enters Georgia.
As is the case with all Florida roads with national designations, the entirety of US 1 has a hidden FDOT designation:
Among other designations, US 1 is a designated Blue Star Memorial Highway along its entire route through the state. Markers are placed at various locations, including one in Rockledge and Fort Lauderdale.
US 1 officially begins its northward journey at the Monroe County courthouse at the intersection of Whitehead and Fleming streets in Key West. It proceeds south as Whitehead Street, a two-lane street, until the intersection with Truman Avenue, which takes it east through central Key West. Truman Avenue becomes North Roosevelt Boulevard about a mile (1.6 km) east and remains so until leaving the island; US 1 expands to four lanes along its length. The road follows the northern shore of this section of Key West, then after curving southward, it meets SR A1A head-on at a T intersection before continuing east. This intersection also marks the southern terminus of the Overseas Highway, which US 1 is known by between here and mainland Florida.
After crossing to Stock Island and forming the boundary between the eponymous district and incorporated Key West, US 1 proceeds through unincorporated Monroe County on Boca Chica Key, past Naval Air Station Key West, and Rockland Key, where the Overseas Highway drops down to a two-lane road. It then crosses East Rockland Key, Big Coppitt Key (and its congruous district), Saddlebunch Keys, Sugarloaf Key, Park Key, Cudjoe Key (and its congruous district), Summerland Key, Ramrod Key, Middle Torch Key, Little Torch Key, Big Pine Key (and its congruous district), Scout Key, and Spanish Harbor Key. The highway expands to four lanes as it crosses the Bahia Honda Bridge, then reduces to two lanes as it traverses Bahia Honda Key, Ohio Key, Missouri Key, and Little Duck Key. After Little Duck Key, US 1 enters Knights Key, Boot Key, Key Vaca, and the town of Marathon via the Seven Mile Bridge, thus leaving the lower Keys.
US 1 runs through Marathon as a four-lane road. After Key Vaca, the road becomes two-lane once more and runs through Fat Deer Key, where it forms the northern boundary of the city of Key Colony Beach. It then continues wholly in Marathon through Long Point Key, Crawl Key, and Grassy Key. The road then crosses to Little Conch Key and then Conch Key, both part of the Duck Key district. US 1 then crosses to and traverses Long Key, which is mostly unincorporated except for the city of Layton, which the highway passes through. The road then reaches Craig Key, and then the village of Islamorada including Lower Matecumbe Key, Tea Table Key, Upper Matecumbe Key, and Windley Key. US 1 crosses a drawbridge onto Plantation Key, where it expands to four lanes and then leaves Islamorada as it crosses to Key Largo. Immediately the Overseas Highway enters Tavernier, where it temporarily splits into a pair of one-way roads through the community. Soon, the road enters the community of Key Largo, which also features another pair of one-way roads. At the northern end of the Key Largo district, about two-thirds of the way along the island, US 1 intersects County Road 905 (CR 905), which offers an alternative route out of the Keys via North Key Largo and the Card Sound Bridge. Signage approaching the intersection directs northbound motorists to take this alternative route if the lights on it are flashing. US 1 swings to the northwest, forms the southern boundary of North Key Largo, and becomes a two-lane divided road after the intersection. After crossing the Jewfish Creek Bridge (where it enters unincorporated Monroe County again) and traveling along Cross Key, US 1 crosses Manatee Creek, along with the Miami-Dade County boundary, and reaches the mainland.
For the first 14 miles (23 km) in Miami-Dade County, US 1 is a divided two-lane road bordering Everglades National Park on the west. It is named South Dixie Highway from the county line to Miami. Its first major intersection is with the north end of Card Sound Road south of Florida City. Similarly, to the south, signage directs southbound travelers approaching this intersection to take Card Sound Road if the lights on it are flashing rather than taking US 1 south to Key Largo.