State Highway 30, or SH 30, runs from Business SH 6-R in College Station via Roans Prairie to SH 19 in Huntsville. This route was designated in 1961, replacing SH 45. It is known as Harvey Road between Business SH 6-R and FM 158 in College Station, as 11th Street between I-45 and US 190 (Phelps Dr) in Huntsville, and as Riverside Drive east of US 190 (Phelps Dr) in Huntsville.

SH 30 was a route proposed by 1919 to run from Wichita Falls to Sabinal. The route remains mostly the same, with only the southern portion rerouted into Del Rio by 1933. By 1938, the highway was cancelled as U.S. Highway 277 was routed over its entirety from Del Rio to Wichita Falls.