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.
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
The cost
Section B-1 will cost $1.96 billion to build out, according to TxDOT documents.
It will be primarily funded through toll revenue collected from users, Shirley said.
Separately, a small portion of the project north of the Hwy. 35 interchange will be funded by state funds, Shirley said.
A project cost breakdown is not yet available, but is slated to be released shortly after April, when proposals for the project are submitted, according to TxDOT documents.
While toll rates have not yet been established for Section B-1, the Grand Parkway’s toll rates are established and updated on a regular basis in concert with local toll facilities, Shirley said.
TxDOT reported $347.7 million in operating revenue for the Grand Parkway in 2024, according to its annual financial report.
On the business side, Bryan Bolton, League City Chamber of Commerce president, said he believes the expansion of Grand Parkway will be “transformative” for League City’s identity.
The roadway expansion, along with development coming to the city’s west side, will also help achieve the chamber’s mutual goal with League City’s Economic Development Corp., which is to provide a place where people can live and work in League City—or close to it—without having to drive to Houston.
“It’s going to be huge," Bolton said. "It’s just going to really open up a lot of opportunities where we’re seen as an economic hub, like The Woodlands. That’s what we want for League City.”
Zooming out
What's next?
Segment B-1 is still in its procurement phase, meaning TxDOT is evaluating and getting set to select a contractor to design and build the segment.
After a contract is executed, design and project mobilization will take place in the summer, fall and winter of 2026, Shirley said.
When construction occurs, Shirley requests that drivers:
- Don’t use phones
- Slow down
- Obey warning signs
“In 2031, we’ll have a new roadway to drive on and alleviate some of the congestion issues that will come with all the new growth,” League City City Manager John Baumgartner said.
Residents of League City can stay informed on the project and its progress by visiting www.leaguecitylistens.com/grandparkway. The timeline for the project is as follows:
- February: technical, price proposals due
- Late April: conditional award
- July: contract execution
- Late summer, fall and winter: design and project mobilization
- Spring 2027: construction
- Summer or fall 2031: Section B-1 of Grand Parkway opens to traffic
