FAQ

The SH 99 Grand Parkway Segment B-1 project in Galveston and Brazoria counties is being delivered in two phases. Phase I consists of four new SH 99 tolled lanes (two in each direction) for approximately 14 miles, from FM 646 to south of FM 2403, discontinuous two-lane frontage roads from SH 35 to I-45, grade-separated interchanges, nearly 6 miles of non-tolled operational improvements to SH 35, and two direct connectors at SH 35. Phase II will be delivered under a separate contract, and includes four direct connectors at SH 45.

The project will enhance safety, mobility, and system connectivity while accommodating economic development and providing an alternate emergency evacuation route.

Segment B-1 is part of the Grand Parkway System, a 184-mile highway project with segments in various phases of development around the greater Houston area and spread across the seven counties of Brazoria, Chambers, Fort Bend, Galveston, Harris, Liberty, and Montgomery. Once complete, it will be the largest loop serving the region.

The SH 99 Grand Parkway Segment B-1 project is located in Brazoria and Galveston counties. It extends from approximately FM 2403 to FM 646 and also includes improvements along SH 35 in Brazoria County.

The project is needed to improve mobility, reduce congestion, enhance safety and regional connectivity as the surrounding communities continue to grow.

By adding new roadway capacity and improving existing routes, the project will improve travel times by offering drivers more reliable route options and more efficient connections between key corridors, including SH 35 and I-45.

• Construction of a new four-lane tollway with discontinuous two-lane frontage roads and 17 grade-separated interchanges
• Two direct connectors at SH 35
• ~6 miles of operational improvements along SH 35
• Four direct connectors at the I-45 interchange (delivered as phase II, under a separate contract to be let in 2028)

Yes. On April 30, 2026, the Texas Transportation Commission, by Minute Order 117165, approved the determination that the proposal submitted by Ferrovial Construction-Webber 99 provides the apparent best value to TxDOT. This conditional award cleared the way for final contract negotiations to begin between TxDOT and Ferrovial Construction-Webber 99. 

In June 2026, TxDOT is preparing to execute the Design-Build Contract (DBC) by meeting the requirements of the Texas Administrative Code (TAC) which call for publishing a disclosure of the project's financial information and hosting at least one public hearing to solicit public comment.  For more information on the public hearing(s), visit TxDOT's meetings and hearings page. 

The DBC is anticipated to be executed in July 2026.

Construction is anticipated to begin in 2027.

Construction is anticipated to be complete in 2032.

During construction, drivers may experience periodic lane closures, traffic shifts, and construction activity along portions of SH 99, SH 35 and surrounding roadways.  

When construction begins, a reduced speed limit of 45 mph will be established along SH 35.

TxDOT will work to minimize disruptions and will provide advance notice of major traffic changes when possible. Drivers are encouraged to plan ahead, use caution in work zones, and allow extra travel time.

TxDOT will keep communities informed through a combination of project updates, public notices, and ongoing communication efforts.

Information may be shared through the project website, email updates, social media, and coordination with local agencies and community stakeholders. Additional outreach may occur as needed to notify the public of construction activities and traffic changes.

For emergencies, please call 911. For immediate questions or concerns, the public can contact the project team at (281) 529-4122 or grandparkwaysegmentb1@atkinsrealis.com.

Within approximately three-to-five months following contract execution, a 24/7 telephone hotline and a local project office will be established.  Contract execution is anticipated in mid-July.

The total estimated cost is $1.4 billion. The project is anticipated to be financed by the Grand Parkway Transportation Commission (GPTC) primarily through toll revenue bonds and notes and supplemented by state funds and a federal Transportation Infrastructure Finance and Innovation Act (TIFIA) loan.

The SH 35 Bypass mainlanes at the north end of the project area are funded by the state, independent of the GPTC. It was determined to be in the best interest of the community for these improvements to be delivered as part of the Segment B-1 project. This approach avoids having multiple contractors working in close proximity, thereby eliminating the risk of temporary or "throw away" work  (i.e., when improvements constructed by one project are not compatible with the other and must be removed), and prevents potential scheduling conflicts between projects, ultimately minimizing disruption to the surrounding community. For more information on project financing, review the information shared at the project’s financial public hearings in June 2026, available on TxDOT's meetings and hearings page.

The GPTC is a public nonprofit Texas corporation created by and authorized by the TTC to design, construct, reconstruct, expand, operate, and maintain portions of SH 99. For more information, visit the GPTC webpage.

The new four-lane SH 99 will operate as a toll road with non-tolled frontage roads while also delivering non-tolled operational improvements along SH 35. Tolling is being used to help fund the design, construction, and long-term maintenance of the SH 99 portion of the project. Tolling is one of the many tools TxDOT uses to fund regionally significant transportation infrastructure when the need for mobility improvements exceeds what public tax dollars alone can fund.

Toll rates for Segment B-1 are established in accordance with policies adopted by the Texas Transportation Commission and are based on a per-mile rate structure. Specific toll rates will be finalized and made available to the public prior to the roadway opening.

Tolls will be collected electronically on the SH 99 mainlanes. Drivers will use a compatible toll tag, such as TxTag, EZ TAG, or TollTag, or be billed by mail if no tag is used.