Conceptualized in the early 1960s, Grand Parkway, or State Hwy. 99, is a proposed 180-mile circumferential highway that travels around the Greater Houston metro. It is now moving into the southeastern region, according to the Texas Department of Transportation.
The big picture: The project will extend the highway 14 miles from FM 646 in League City to south of FM 2403 in Alvin, TxDOT documents show.
The expansion project, titled “Section B-1,” is slated to start construction in 2027.
Before then, technical and price proposals are due by the end of February, with a contract expected to be awarded in April and executed in July. Design and project mobilization will follow in the second half of 2026, said Kenneth Shirley, a TxDOT construction management engineer.
The details: According to TxDOT documents, the expansion will include construction for the following:
- Four-lane tollway with discontinuous two lane frontage roads and interchanges
- Two direct connectors at State Hwy. 35
- State Hwy. 99 mainlanes north of Grand Parkway
- Four direct connectors at I-45 interchange