It heads northeast on Mercer Avenue, before traveling to the north on Bray Street.

Just over 1 mile (1.6 km) after intersecting SR 234, the route crosses into Terrell County.

The highway continues to the north until it meets its northern terminus, an intersection with US 82/SR 520 in Dawson.

[citation needed] SR 55 used to continue north, into Cusseta, along what is now US 82/SR 520, but was superseded, and thus replaced, upon the commissioning of US 82/SR 520.

was a business loop of SR 55 that existed entirely within the city of Cusseta.