The highway continues north into unincorporated Pulaski County as SR 738 (Robinson Tract Road).

Each direction of SR 99 follows two-way streets east to Jefferson Avenue, where both Main and 3rd become one-way.

SR 99 gains a median west of Bob White Boulevard, where the highway reduces to two lanes, begins to curve to the south, and crosses Norfolk Southern Railway's Pulaski District and Peak Creek.

At the east town limit of Pulaski, the state highway becomes Count Pulaski Drive, which expands to a four-lane divided highway shortly before reaching its partial cloverleaf interchange with I-81 and SR 100 and, just to the south, its eastern terminus at SR F-047 (Kirby Road) in the hamlet of McAdam.

The rest of the road to the Bland County line was added in 1936,[5] and in 1937 it was completed to SR 42 at Mechanicsburg.