GROWTH & DEVELOPMENT | TRAFFIC | RESIDENT CONCERNS
Grand Parkway B1 Construction Is Getting Closer — Here’s What League City Residents Should Know
TxDOT says construction could begin in late 2026 or early 2027 on a major new toll corridor that will affect FM 646, Calder Road and Hobbs Road while reshaping mobility across League City’s west side.
By Talk of League City | October 15, 2026
LEAGUE CITY, Texas — One of the largest transportation projects to affect League City in decades is moving closer to construction.
The City released a new interview this week with Glenn Allbritton, TxDOT Houston District Engineer, addressing the Grand Parkway B1 expansion and what residents can expect as the project moves toward the construction phase.
According to League City’s current project information, construction is expected to begin in late 2026 or early 2027.
For League City residents, the project is more than another regional highway.
It is expected to affect several heavily traveled local roads, open new transportation connections across the city’s rapidly developing west side and eventually provide another major hurricane evacuation route for Galveston County.
What Is the Grand Parkway?
State Highway 99, better known as the Grand Parkway, is a planned approximately 180-mile circumferential highway around the Greater Houston area.
The system is divided into multiple segments, several of which are already open around the Houston region.
The portion now approaching League City is known as Segment B.
TxDOT describes the overall Segment B project as an approximately 28-mile, four-lane controlled-access toll road extending from the I-45 South area toward SH 35 in Alvin and ultimately SH 288 near Rosharon.
A portion known as B1 is the section expected to move into construction first.
League City Roads Will Be Directly Affected
The project will not simply pass through undeveloped land outside of town.
League City says construction will directly affect several local roadways, including:
- FM 646
- Calder Road
- Hobbs Road
Those corridors already serve rapidly developing portions of western League City.
As construction begins, residents should expect traffic patterns, access and construction activity around these areas to become increasingly important topics.
Why Is TxDOT Building It?
TxDOT identifies three primary goals for the B1 project:
- Reduce regional congestion
- Improve mobility between growing communities
- Provide additional hurricane evacuation capacity
The evacuation component is particularly relevant for League City.
During major Gulf Coast evacuations, traffic from communities south and east of Houston funnels toward a limited number of major routes.
A new east-west connection could provide motorists with another way to move inland rather than relying as heavily on I-45.
It Could Reshape League City’s West Side
The Grand Parkway is also expected to influence where development occurs.
League City has already been planning for significant additional growth west of I-45.
The City’s Westside Master Plan specifically identifies the Grand Parkway as one of the major forces expected to accelerate residential and commercial development in that part of the community.
New highway access frequently makes previously less-accessible property more attractive for development.
That could mean additional homes, retail, restaurants, employment centers and other commercial activity along or near the future corridor.
It also makes advance planning for roads, drainage, utilities, parks and public services increasingly important.
Traffic Relief Could Come With Short-Term Disruption
The long-term objective is improved mobility, but major highway construction can create short-term challenges.
Residents traveling along FM 646, Calder Road or Hobbs Road may eventually encounter construction vehicles, temporary lane configurations, intersection work or other disruptions associated with building the corridor.
The City and TxDOT have not yet announced every traffic-control configuration that will be required throughout construction.
Those details will become especially important as specific construction phases begin.
This Will Be a Toll Road
The Grand Parkway B1 project is planned as a controlled-access tolled corridor.
That means drivers choosing to use the new roadway should expect toll charges once the route opens.
The broader Segment B design also calls for intermittent frontage roads.
Detailed interchange layouts and access points are available through TxDOT’s project maps and will determine how League City motorists ultimately connect to the highway.
When Will Construction Actually Start?
League City’s current project page says TxDOT is targeting late 2026 or early 2027 for construction to begin.
Transportation project schedules can change because of final design, utility relocation, right-of-way work, permitting, contractor schedules and other factors.
Residents should therefore treat that window as the current target rather than a guaranteed groundbreaking date.
Watch the City’s Interview With TxDOT
League City recently interviewed TxDOT Houston District Engineer Glenn Allbritton about the project, including its purpose, anticipated impacts and construction timeline.
Why Residents Should Start Paying Attention Now
The Grand Parkway will likely affect League City long before the first driver pays a toll.
Construction activity could influence local traffic, while the future road itself may influence land values, development patterns and decisions involving nearby infrastructure.
Residents living or traveling near FM 646, Calder Road and Hobbs Road will have the most immediate reason to follow the project.
But the long-term effects could reach much farther across the city.
For commuters, the project promises another regional transportation option.
For emergency planners, it could add valuable evacuation capacity.
For developers, it opens access to large areas of western League City and surrounding Galveston County.
And for existing residents, it raises an equally important question: whether roads, drainage and public services will keep pace with the new development that improved access could bring.
What Talk of League City Will Be Watching
As construction approaches, several issues will deserve close attention:
- Construction start dates and phasing
- Traffic impacts along FM 646, Calder Road and Hobbs Road
- Interchange and frontage-road access
- Impacts on nearby neighborhoods
- New development proposals near the corridor
- Drainage and utility improvements tied to growth
- The eventual opening schedule
The project is large enough that it will likely generate years of League City news before the roadway is complete.
Talk of League City will continue following the Grand Parkway B1 project, construction impacts and development occurring around the future corridor.
Sources: City of League City Grand Parkway Q&A and League City Listens Grand Parkway Expansion Project; Texas Department of Transportation Segment B project information.