Georgia State Route 120

State Route 120
Georgia State Route 120 highlighted in red
Route information
Maintained by GDOT
Length90.7 mi (146.0 km)
Major junctions
West end SR 100 in Tallapoosa
Major intersections US 27 / SR 1 in Buchanan
US 278 / SR 6 in Dallas and Powder Springs
US 41 / SR 3
in Marietta
I-75
in Marietta
SR 9 / SR 92 / SR 140 in Roswell
US 19 / SR 400 / SR 9 in Alpharetta
US 23 / SR 13 in Duluth
I-85 southeast of Duluth
East end US 29 / SR 8 in Lawrenceville
Location
CountryUnited States
StateGeorgia
CountiesHaralson, Paulding, Cobb, Fulton, Gwinnett
Highway system
  • Georgia State Highway System
SR 119 SR 121

State Route 120 (SR 120) is a 90.7-mile-long (146.0 km) state highway that runs west-to-east through portions of Haralson, Paulding, Cobb, Fulton, and Gwinnett counties in northwestern part of the U.S. state of Georgia.