Texas Department of Transportation Began Interchange Work

Construction at the I-10 and Loop 1604 interchange has caused lane closures and travel delays on San Antonio's Northwest Side.

Updated on Oct. 4, 2026 in Construction

Isometric editorial illustration of a multi-level highway interchange with concrete overpasses, representing urban infrastructure expansion. — The Texas Department of Transportation has launched major lane and ramp closures at the I-10 and Loop 1604 interchange in San Antonio to facilitate long-term infrastructure expansion. AI Illustration. Upload story photo >

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Do you adjust your daily commute habits during long-term road construction projects in your area?

The Texas Department of Transportation has initiated a series of lane and ramp closures at the I-10 and Loop 1604 interchange in San Antonio. These construction efforts are aimed at expanding the busy interchange, leading to significant travel delays for commuters across the Northwest Side.

Why it matters

The expansion work is critical for improving traffic flow at a major intersection in the city. By upgrading the infrastructure, officials aim to accommodate growing vehicle volumes in the area, though the work requires ongoing restrictions to keep road crews safe.

Crews are managing ongoing weekday restrictions from 9 p.m. to 5 a.m. and 9 a.m. to 3 p.m. to accommodate the interchange expansion. The project has resulted in a permanent closure of the eastbound Loop 1604 entrance ramp following the I-10 interchange.

The players

Texas Department of Transportation

The state agency is responsible for overseeing the construction, maintenance, and planning of the Texas highway system.

The details

Crews are implementing alternating U-turn shutdowns at La Cantera Parkway and maintaining one open lane for I-10 traffic during the project. The Eastbound I-10 Frontage Road left lane is now permanently restricted from La Cantera Parkway to the Loop 1604 interchange.

Weekday daytime work occurs between 9 a.m. and 3 p.m.
Weekday overnight restrictions occur between 9 p.m. and 5 a.m.
Weekend overnight closures continue through Monday morning, October 5, 2026.

Market Landscape

This project follows a pattern of capacity expansion set by the Texas Department of Transportation's Unified Transportation Program. Such infrastructure investments are essential for San Antonio to maintain its competitive position as a major regional economic hub.

Commuters should plan for significant travel delays and potential detours while navigating the Northwest Side construction zones. Drivers are advised to adjust their schedules to account for the restricted lane access on the I-10 frontage road and the permanent ramp closure.

The takeaway

Travelers should verify traffic conditions before departing as the permanent closure of the Loop 1604 entrance ramp will affect standard navigation. Staying informed about weekly work schedules can help residents navigate the area more efficiently during the construction phase.