Georgia State Route 10

State Route 10 (SR 10) is a 172.3-mile-long (277.3 km) state highway in the U.S. state of Georgia. It travels from Downtown Atlanta to the South Carolina state line in Augusta. This highway, along with U.S. Route 78 (US 78), connect three of the biggest metro areas of the state together: Atlanta, Athens, and Augusta. It travels concurrently with US 78 in three sections: from Atlanta to Druid Hills; from near Stone Mountain to near Athens; and from Athens to its eastern terminus, for a total of 149.2 miles (240.1 km), or approximately 86.6 percent of its route.

At its western end, SR 10 is the eastward extension of Andrew Young International Boulevard NE and Ellis Street NE and has an interchange with I-75/I-85 (Downtown Connector) on the eastern edge of Downtown Atlanta. It curves to the northeast and has an incomplete interchange with SR 42 Connector, which acts like an eastern spur of the Freedom Parkway. After that, SR 10 begins to curve to the north and passes to the west of the Jimmy Carter Library and Museum and the Carter Center; it curves to the north-northwest and has an intersection with US 29/US 78/US 278/SR 8 (Ponce de Leon Avenue NE).

The five highways travel concurrently to the east and meet US 23/SR 42. Here, US 23 joins the concurrency. The six highways travel together until they reach the southern edge of Deepdene Park, where US 278/SR 10 depart the concurrency to the southeast. US 278/SR 10 intersects SR 155 in Decatur. SR 155 joins the concurrency for about three blocks. At Mountain Drive, SR 10 departs from US 278 to the northeast. This intersection also marks the western end of SR 12. The short Mountain Drive segment of SR 10 passes north of the Kensington MARTA station. At the eastern end of Mountain Drive is an intersection with the eastern end of SR 154 (Memorial Drive). At this intersection, SR 10 turns onto Memorial Drive and has an interchange with I-285.

SR 10 skirts along the northwestern edge of Stone Mountain and has an interchange with East Ponce de Leon Avenue, just before meeting US 78/SR 410 (Stone Mountain Freeway). At this interchange, SR 410 ends and US 78/SR 10 travel concurrently. A short distance later, they have an interchange with the southern end of SR 236. The westbound and eastbound lanes diverge from each other. The eastbound lanes curve to the southeast and have an interchange with the main entrance of Stone Mountain Park.

In Mountain Park, they have an interchange with West Park Place Boulevard and Rockbridge Road; the latter is only listed on westbound signage. After this interchange, Stone Mountain Freeway ends and the numbered highways continue to the east-northeast. They intersect the northern end of SR 264 at the Cpl. Jonathan Ryan Ayers Memorial Interchange. The concurrency enters Snellville, where they intersect SR 124 (Scenic Highway) at the James D. Mason Memorial Interchange. Before exiting the city, they intersect SR 84.

In downtown Loganville, the concurrent highways intersect SR 20. They then intersect SR 81, which joins the concurrency. At Lee Byrd Road, SR 81 splits off to the south-southeast. US 78/SR 10 bypass the main part of Monroe on a freeway bypass. Their first exit is with SR 10 Business. Interchanges with SR 138 and SR 11 follow. Another interchange with the eastern end of SR 10 Business marks the end of the freeway bypass. US 78/SR 10 intersect SR 83 before leaving Monroe.

US 78/SR 10 continue to the northeast and intersect SR 53. They intersect Mars Hill Road, the former SR 209, just before an interchange with US 29/SR 8/SR 316, as well as the western end of US 78 Business. Here, SR 10 begins a concurrency with US 78 Business before entering Athens; while US 29/US 78/SR 8/SR 316 travel to the east-southeast.

US 78 Business/SR 10 travel to the southeast of Bogart and turn east along Atlanta Highway. They meet an interchange with SR 10 Loop (Athens Perimeter Highway). and pass Evergreen Memorial Park; then, they curve to the northeast. After passing north of Timothy Road Elementary School, they have an incomplete interchange with the northern terminus of Epps Bridge Parkway. After that, they cross over the Middle Oconee River. Here, Atlanta Highway ends and US 78 Business/SR 10 take on the West Broad Street name. They pass north of St. Mary's Hospital, Clarke Middle School, Classic City High School, and Clarke Central High School. At Milledge Avenue, they intersect SR 15 Alternate. Just over five blocks later, they skirt along the northern edge of the University of Georgia and curve to the southeast, crossing over the North Oconee River. Just over 3,000 feet (910 m) later, the concurrent highways meet US 29/US 78/US 129/US 441/SR 8/SR 10 Loop/SR 15, as well as the unsigned SR 422 (a total of eight highways). At this interchange, US 78 Business ends, and US 78/SR 10 travel to the southeast. They curve to the east-southeast and pass to the south of the Athens Ben Epps Airport. At the intersection of Cherokee Road, they pass southwest of Satterfield Park. They skirt along the northeastern edge of the Southeast Clarke Park before crossing over Shoal Creek. Just prior to crossing over Big Creek, the concurrency begins to curve to the south-southeast. They curve to the east-southeast and then to the southeast before leaving the city limits of Athens and entering Oglethorpe County.