Just before leaving the county, it enters Draketown, where it intersects SR 113 (Buchanan Highway).

At this intersection, SR 6 Business (Buchanan Street) east begins and heads northeastward.

Farther to the east, in Hiram, the concurrency intersects SR 360 and Bill Carruth Parkway.

Just before entering Marietta, the highway passes through Kennesaw Mountain National Battlefield Park.

To the southeast is Southern Polytechnic State University and then US 41/SR 3 (Cobb Parkway SE).

In Roswell, it intersects SR 9 (South Atlanta Street), where they begin a concurrency to the northeast.

For about a block, SR 140 joins the concurrency, until it departs to the northwest on Houze Road.

SR 120 continues to the southeast until it meets its eastern terminus, an intersection with US 29/SR 8, in the central part of the city.

State Route 120 Connector (SR 120 Conn.) exists within the south-central and southeastern parts of Paulding County.

The route begins at an intersection with the SR 120 mainline (Buchanan Highway) southwest of Dallas, Georgia.

[9][10] A portion of SR 176 just west of Lost Mountain had a "sand clay, top soil, or stabilized earth" surface.

[15][16] By the middle of 1955, this entire segment of SR 176 had a sand clay, topsoil, or stabilized earth surface.

[19][20] About a decade later, the segment of SR 176 between Lost Mountain and New Hope was shifted to the northeast.

It begins at an intersection with the SR 120 mainline (Whitlock Avenue SW) in the central part of the city.

The two highways head north and curve to the east and meet US 41/SR 3 (Cobb Parkway SE).

The road meets an interchange with Interstate 75 (I-75) before curving to the southeast to meet its eastern terminus, an interchange with the eastern terminus of SR 3 Conn. (Roswell Road) and the SR 120 mainline.

[24] These intersections start from the western meeting with the SR 120 mainline and proceed counterclockwise.