U.S. Highway 1 (US 1) in the U.S. state of Georgia, which is concurrent for almost its entire length with State Route 4 (SR 4), is a highway traversing north–south through portions of Charlton, Ware, Bacon, Appling, Toombs, Emanuel, Jefferson, and Richmond counties in the southeastern and east-central parts of the state. In Georgia, the highway originates at US 1/US 23/US 301/State Road 15 (SR 15) at the St. Marys River and the Florida state line, where SR 4 reach their southern terminus. It travels to the Savannah River at the South Carolina state line in Augusta where the route continues to North Augusta, South Carolina. Here, SR 10 reaches its eastern terminus.

Route description Charlton County

SR 4 begins at the Florida state line, at a bridge over the St. Marys River, south of Folkston. This is where US 1/US 23/US 301/SR 15 enter Georgia from Florida. US 1, US 23, US 301, SR 4, and SR 15 travel north as the Public Safety and Veterans Highway through rural parts of Charlton County. They curve to the northwest for a brief portion. Just before entering Folkston, where they use the Second Street name. They have an intersection with the southern end of Third Street, a former portion of US 1, they enter the main part of the city. They intersect Main Street. This intersection is just west of the Charlton County Courthouse. One block later is Love Street. Just north of Garden Street, they curve to the northeast. They then intersect SR 23/SR 121, which join the concurrency. This is one of a few seven-highway concurrencies in the state. The seven highways continue north. Just after curving back to the northwest, they intersect SR 40 Connector (SR 40 Conn.; Indian Trail). At this intersection, they pass the Charlton County Library. They then use the Okefenokee Trail as their path. Just north of Robin Lane, US 301 and SR 23 continue to the northeast, while US 1, US 23, SR 4, SR 15, and SR 121 curve to the northwest on the Woodpecker Trail. They cross over some railroad tracks and intersect with the northern end of Dogwood Lane. The highways resume traveling through rural parts of the county. They cross over Little Spanish Creek and then Winding Branch. They intersect the west end of Crews Road and the north end of Old Dixie Highway, a former portion of US 1. Just after this intersection is a crossing over Spanish Creek. They curve north and cross over Melton Branch. Then, in Racepond, SR 15/SR 121 splits off to the northeast, while US 1, US 23, and SR 4 continue to the northwest and enter Ware County.

Ware County

US 1, US 23, and SR 4 cross over Gum Slough and curve more to the northwest. They travel through Fort Mudge and the Dixon Memorial State Forest. They curve to the north and then intersect SR 177. They cross over Mill Creek before entering the southeastern part of Waycross.

Immediately, they pass an office of the Georgia Department of Corrections. Just before an intersection with the western end of Osburn Road, they curve back to the northwest. Just past The Mall at Waycross, they curve to the northwest. Just before an intersection with City Boulevard, they curve back to the north. They intersect the southern end of US 1 Business (US 1 Bus.)/US 23 Bus./SR 4 Bus. (Memorial Drive) and US 82/SR 520 (South Georgia Parkway). US 1/US 23/SR 4 turn left onto US 82/SR 520 and travel concurrently with them. The five-highway concurrency travels to the west. Immediately, they curve to the northwest. An intersection with the southern end of Wilkerson Street leads to Memorial Stadium. The next street is Blackwell Street. Between an intersection with the northern end of Amanda Street and one with Morton Avenue, they cross over the city's drainage canal. An intersection with Lee Street leads to the downtown business district. An intersection with Brunel Street leads to the Obediah Barber Homestead and Swamp Road. At an intersection with Stephenson Street, the five highways curve to the northwest. On this curve, they travel on a bridge over Haines Avenue, some railroad tracks, and US 84/SR 38 (Plant Avenue). Immediately after this bridge, they curve back to the northwest. At McDonald Street, US 84 and SR 38 join the concurrency. The seven highways, US 1, US 23, US 82, US 84, SR 4, SR 38, and SR 520, continue northwest. At an intersection with Nicholls Street, they curve to the west and travel on a bridge over some railroad tracks. Just pass this bridge, they curve to the northwest. At Victory Drive, US 84 and SR 38 depart to the south. Just past this intersection, there is one with South Augusta Avenue. Here, the highways pass South Georgia State College's Waycross campus. Between an intersection with of University Boulevard and one with Anita Street, they leave the city limits of Waycross.

Just west of Anita Street, they curve back to the west. They cross over Kettle Creek. A short distance later, they curve to the northwest. They intersect SR 122 (Carswell Avenue). They curve to the northeast and travel on a bridge over some railroad tracks. Immediately afterward, they travel on a bridge over Albany Avenue. The highways curve to the northwest and come to an intersection with Scapa Road. Here, US 1, US 23, and SR 4 turn right to the northeast, while US 82 and SR 520 continue straight ahead. Almost immediately, they intersect Fulford Road, which leads to the Ware County Sheriff's Office, the Southland Waste Transfer Station, the Ware County Emergency Management Agency, and the Waycross Regional Youth Detention Center. The three highways curve to the north and pass the Waycross–Ware County Industrial Park West. They curve to the northwest for a short distance and then curve to the northeast. They intersect the northern end of US 1 Bus./US 23 Bus./SR 4 Bus. (Alma Highway). The mainline highways head to the northwest and cross over Cox Creek. Almost immediately, they cross over the Satilla River on the Charles Ray King Memorial Bridge and curve north. On a curve back to the northwest, they cross over Dryden Creek. They curve to the north and travel through Dixie Union. They curve to the northeast and travel on a bridge over Crawley Road and some railroad tracks. At an intersection with Jamestown Road and Alma–Waycross Highway, they enter Bacon County.

Bacon County US 1, US 23, and SR 4 cross over Little Hurricane Creek on the PFC Clarence Loran Gaskins Memorial Bridge and then curve to the northwest. Upon entering Alma, they pass Bacon County High School Just south of an intersection with Floyd Street and Radio Station Road, they begin a curve to the northeast. Just north of this intersection, they meet the southern end of SR 4 Alternate (SR 4 Alt.; South Dixon Street). North of 17th Street, they pass the Alma campus of Coastal Pines Technical College. The next block is an intersection with SR 32 (16th Street). Just north of 11th Street, the concurrency passes the Alma/Bacon County Public Library. Between 8th and 6th streets, the highways begin a curve to the northwest and pass the Alma Bacon County Welcome Center. They cross over Bear Branch and then meet the western end of Magnolia Drive, which leads to the Alma Bacon County Recreation Department. One block later, they intersect the northern end of SR 4 Alt. (North Dixon Street) and Camellia Drive. Here, they curve to the north. An intersection with Cumberland Road leads to the Bacon County Primary School. A short distance later, they curve to the northeast. They leave the city limits of Alma and cross over Hurricane Creek on the Curtis Lee Marion Bridge. They curve to a due north direction and travel on the Jauquion R. "Rab" Tanner Bridge. The highways curve back to the northeast just before an intersection with the southern end of SR 19. Here, US 23 departs the concurrency on SR 19. US 1 and SR 4 continue to the northeast and cross over Big Satilla Creek and enter Appling County.

Appling County

US 1 and SR 4 continue to the northeast. Just before an intersection with Versie Aldridge Road and Cauley Road, they curve northeast. Just before an intersection with Buck Head Road, they curve back to the northeast. An intersection with Airport Road leads to Baxley Municipal Airport. The highways cross over Blackwater Creek and then curve back to the northeast. They cross over Sweetwater Creek and then enter Baxley. An intersection with Johns Lane leads to Appling County Elementary School. At an intersection with Second Street, they begin a second concurrency with SR 15. An intersection with Bay Street leads to Lake Mayers Public Park. US 1, SR 4, and SR 15 cross over some railroad tracks just before intersecting US 341/SR 27 (Parker Street). Around an intersection with of Ivey Street, the three highways curve to the northwest. At the intersection of Brobston Street, they curve back to the northeast. At an intersection with Sursson Street, they temporarily leave the city limits of Baxley. At the intersection with Nails Ferry Road, they reenter the city. After curving back to the northwest, they leave Baxley for the final time. They cross over Tenmile Creek, curve due north, and cross over Little Tenmile Creek. After crossing over Bay Creek, they cross over an industrial railway. The next intersection with West River Road leads to Deen's Landing, an Altamaha River waterway public landing. They pass a picnic area just before crossing over the Altamaha River on the Joseph Simmons Alexander Sr. Memorial Bridge to enter Toombs County.

Toombs County

US 1, SR 4, and SR 15 continue to the northeast with four-lane construction progressing in the early 2020s. After crossing over Williams Creek, the route enters the unincorporated community of English Eddy. They curve to the northwest. Just before an intersection with SR 147 and Cedar Crossing Road, they curve to a more northern direction. After leaving English Eddy, they curve to the northeast. After crossing over Cobb Creek, a new section of four-lane road continues northeast, away from the old highway, bending back to the northwest to cross SR 56 on the West side of Toombs Central Elementary School and the Toombs County Recreation Department (which are accessed from the former highway) in the unincorporated community of Toombs Central. Shortly afterward, the new section of the highway rejoins the existing highway continuing northwest. In the unincorporated community of South Thompson, they begin a curve back to the northeast. They intersect SR 29. Here, SR 15 splits off onto SR 29. US 1 and SR 4 curve to the northeast and cross over Rocky Creek. They curve back to the northeast and cross over Little Rocky Creek. They then travel through Santa Claus. Approximately later, they enter Lyons. They pass Lyons Upper Elementary School and then curve to the northeast. They meet the west end of SR 178 (South Victory Drive). They begin a curve to the northwest. An intersection with South Washington Street leads to Partin Park and the Lyons Recreation Department. They intersect US 280/SR 30 (Liberty Avenue). Just after this intersection, US 1 and SR 4 enter downtown Lyons. They cross over some railroad tracks. Immediately afterward, they intersect SR 292 and SR 152 (Broad Street). After leaving downtown, they pass the Lyons Police Department. Intersections with Cleveland Avenue and Toombs Avenue lead to Toombs County High School's football stadium. Just after leaving Lyons, they cross over Swift Creek and curve to the northeast. They intersect SR 130 and Resmando Road. The roadway curves to the northeast and resumes their northeast direction. They cross over Pendleton Creek and travel through rural areas with agricultural land on both sides of the roadway before entering Emanuel County.

Emanuel County