San Antonio, Texas, January 7, 2026
The Texas Department of Transportation has launched a $473 million expansion project for U.S. Route 90 in San Antonio. The project aims to widen the highway from four to six lanes, add continuous frontage roads, and construct a flyover ramp to ease congestion on the West Side. With construction set to begin in late 2025 and completion by 2030, the initiative is expected to significantly reduce commute times and accommodate the city’s growing population.
San Antonio, Texas
Major Expansion of U.S. Route 90 Begins
The Texas Department of Transportation (TxDOT) has initiated a significant $473 million project to expand U.S. Route 90 in San Antonio, aiming to alleviate congestion and enhance mobility on the city’s West Side.
Project Details
The expansion covers a 7.6-mile stretch of U.S. 90, extending from Loop 410 to Texas 211. The plan includes:
- Widening the highway from four to six lanes
- Adding continuous frontage roads
- Constructing a flyover ramp connecting westbound U.S. 90 to northbound Loop 1604
- Upgrading intersections at Montgomery Road and Hunt Lane
Construction commenced in late 2025, with completion expected by 2030. The project is fully funded, with an estimated cost of $146 million for the first phase. The second phase, extending from Loop 1604 to State Highway 211, is partially funded at $339 million and is slated to begin in 2028, finishing in 2032. All dates and costs are subject to change.
Rationale and Impact
U.S. Route 90 is one of San Antonio’s most congested highways. Without improvements, commute times are projected to reach 70 minutes. The expansion aims to reduce these times by up to 90%, significantly improving daily travel for residents and commuters.
Background
In December 2025, TxDOT announced the commencement of this long-awaited project, marking a substantial investment in the region’s infrastructure. The expansion is part of a broader effort to accommodate the growing population and economic development in San Antonio’s far West Side.
Related Developments
In addition to the U.S. 90 expansion, TxDOT has been involved in other significant projects in the area, including the Loop 1604 North Expansion Project, which began in 2021 and is expected to be completed in 2028. This project involves expanding Loop 1604 from four to ten lanes and constructing a new interchange linking Loop 1604 and Interstate 10.
Key Features of the U.S. 90 Expansion Project
| Feature | Description |
|---|---|
| Project Cost | $473 million |
| Project Length | 7.6 miles |
| Phases | Two phases; Phase 1: Loop 410 to Loop 1604; Phase 2: Loop 1604 to State Highway 211 |
| Completion Dates | Phase 1 by 2030; Phase 2 by 2032 |
| Funding Status | Phase 1 fully funded at $146 million; Phase 2 partially funded at $339 million |
| Additional Features | Flyover ramp connecting westbound U.S. 90 to northbound Loop 1604; Upgraded intersections at Montgomery Road and Hunt Lane |
FAQ
What is the purpose of the U.S. 90 expansion project in San Antonio?
The project aims to alleviate congestion and enhance mobility on San Antonio’s West Side by widening U.S. Route 90 from four to six lanes, adding continuous frontage roads, and constructing a flyover ramp connecting westbound U.S. 90 to northbound Loop 1604.
When is the U.S. 90 expansion project expected to be completed?
The first phase of the project is expected to be completed by 2030, and the second phase by 2032.
How will the U.S. 90 expansion project impact daily commuters?
The expansion is projected to reduce commute times by up to 90%, significantly improving daily travel for residents and commuters.
What other major transportation projects are underway in San Antonio?
In addition to the U.S. 90 expansion, TxDOT is working on the Loop 1604 North Expansion Project, which began in 2021 and is expected to be completed in 2028. This project involves expanding Loop 1604 from four to ten lanes and constructing a new interchange linking Loop 1604 and Interstate 10.
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