State Highway 6 (
SH 6) runs from the
Red River, the Texas–Oklahoma boundary, to northwest of
Galveston, where it is known as the Old Galveston Highway. In Sugar Land and Missouri City, it is known as Alvin-Sugarland Road and runs perpendicular to I-69/US 59. In the
Houston area, it runs north to
FM 1960, then northwest along US Highway 290 to Hempstead, and south to
Westheimer Road and
Addicks, and is known as Addicks Satsuma Road. In the
Bryan–
College Station area, it is known as the
Earl Rudder Freeway. In Hearne, it is known as Market Street. In Calvert, it is known as Main Street. For most of its length, SH 6 is not a
limited-access road.