Georgia State Route 9

State Route 9 is a north–south highway running from Atlanta to just north of Dahlonega. It overlaps U.S. 19 from along 14th Street, in northwest Atlanta, to Roswell Road at I-285, in Sandy Springs. It is also concurrent with U.S. 19 from Dahlonega to its northern terminus at US 129. In the past, US 19 followed the exact path of SR 9, but after the completion of Georgia 400, US 19 was moved to follow the path of Interstate 285, then Georgia 400 to its end near SR 9 in Dahlonega. Due to the transport of moonshine from the mountains of North Georgia to Atlanta, SR 9 was called Thunder Highway.

State Route 9 parallels U.S. 19/SR 400 for much its length. Because of its proximity to US 19/SR 400, it is a viable alternate to the congested "Alpharetta Autobahn." Along its route, the state road travels through the cities of Atlanta, Sandy Springs, Roswell, Alpharetta, Cumming, Dawsonville and Dahlonega.

Route description

State Route 9 originates at the intersection of U.S. Route 19 (also 14th Street NW) and U.S. Route 41 (also Northside Drive) in Atlanta. It runs east–west from its origin to the intersection with West Peachtree Street NW, and turns north here, shortly after crossing over Interstate 75. SR 9 is signed as Peachtree Street NW from just south of Interstate 85, and crosses under I-85 just north of the I-75/I-85 interchange north of Downtown Atlanta. Just south of Piedmont Hospital, SR 9 changes names from Peachtree Street NW to Peachtree Road NW.

Starting at its intersection with Georgia State Route 141, which originates here, SR 9 is signed as Roswell Road NW. The route continues to run generally north, crossing Interstate 285 at exit 25. From its origin to this point, SR 9 also overlaps with U.S. Route 19, but continues north on its own from this point. It also largely parallels Georgia State Route 400 from here.

Continuing north, SR 9 crosses the Chattahoochee river, and meets with Georgia State Route 120, which overlaps it from here to its intersection with Old Milton Parkway. SR 9 is interchangeably signed as Atlanta Street or Alpharetta Street on this stretch, and as Alpharetta Highway from downtown Roswell, Georgia. From downtown Alpharetta, Georgia, it is interchangeably signed as Cumming Highway, Atlanta Highway, or Atlanta Road. Near exit 14 of Georgia State Route 400, SR 9 starts to overlap with Georgia State Route 20, until they split again in downtown Cumming, Georgia.

From here, SR 9 is signed as Dahlonega Highway, and overlaps with Georgia State Route 306 to Keith Bridge Road. It continues to run north on its own through Dawsonville, Georgia, and then overlaps with Georgia State Route 52 from their intersection to just north of Dahlonega, Georgia. From here, it overlaps again with U.S. Route 19 as well as with Georgia State Route 60, until SR 60 splits off near Porter Springs. SR 9 continues alongside US 19 until its terminus at the intersection with U.S. Route 129 at Turners Corner.

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