State Highway 249, also known depending on its location as West Mount Houston Road, the Tomball Parkway, Tomball Tollway, MCTRA 249 Tollway, or the Aggie Expressway, is a 49.443-mile (79.571 km) generally north–south highway in Southeast Texas. The southern terminus is in North Houston at Interstate 45 (I-45). The current northern terminus of the highway is east of Navasota at SH 105.

Southeast Texas is a cultural and geographic region in the U.S. state of Texas, bordering Southwest Louisiana and its greater Acadiana region to the east. Being a part of East Texas, the region is geographically centered on the Greater Houston and Beaumont–Port Arthur metropolitan statistical areas with a combined population of 7,662,325 according to the 2020 U.S. census.