TxDOT to Close Northbound I-35 Lanes October 27
The overnight closure at Loop 1604 will allow for the installation of bridge beams for the I-35 NEX expansion.
Updated on Oct. 26, 2026 in Construction
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TxDOT will close the northbound lanes of Interstate 35 at the Loop 1604 crossing from 9 p.m. on October 27, 2026, until 5 a.m. the following morning. The temporary closure is necessary to facilitate the installation of bridge beams for the ongoing expansion project.
Why it matters
This closure is part of the $3 billion I-35 NEX project, which aims to increase highway capacity on the Northeast Side. The project will expand the interstate from eight to 14 total lanes to improve regional traffic flow.
The $3 billion I-35 NEX expansion will ultimately increase the interstate capacity from eight to 14 total lanes. Two new regular lanes and one carpool lane in each direction will be supported by two newly constructed elevated structures.
The players
TxDOT
The Texas Department of Transportation is the state agency responsible for maintaining and building the highway infrastructure throughout Texas.
The details
Crews will install bridge beams at the Loop 1604 crossing during the overnight window. Detour signage will be placed in the area to guide motorists safely around the construction site.
Timeline
October 27, 2026: I-35 northbound lanes closed from 9 p.m. to 5 a.m.
2030: Expected completion date for the I-35 NEX expansion project.
Market Landscape
The closure follows the construction timeline set by the I-35 NEX expansion project. This massive infrastructure investment reflects a broader shift toward expanding highway capacity in rapidly growing urban centers like San Antonio.
Commuters traveling on the Northeast Side during the closure window will need to follow posted detour signs to navigate around the construction zone. Motorists should plan for potential travel delays and allow extra time for their trips through the I-35 and Loop 1604 area.
The takeaway
Drivers should prepare for overnight delays and use alternate routes during the closure period. Planning ahead for the construction schedule helps ensure a smoother transit experience through the Northeast Side.
What happens next
The I-35 NEX expansion project is currently scheduled for completion in 2030.
Further reading
Learn more about local infrastructure improvements on the San Antonio Construction page.
Live Poll
In your area, do major highway expansion projects successfully reduce long-term traffic congestion?
