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Southbound I-35 two-lane closure in downtown SA extended through end of March

Closure will last through February

SAN ANTONIO – The two-lane closure on Interstate 35 southbound in downtown San Antonio has been extended until the end of March.

Lanes will be closed from Martin Street to Cesar Chavez Boulevard as part of ongoing joint repair work. The lane reduction will remain in place 24 hours a day.

i-35 CLOSURE UPDATE (KSAT 12 News)

This closure is part of the broader I-35 and I-10 downtown repair project, a $25.9 million initiative aimed at improving safety along 5.5 miles of the corridor.

The project includes repairs and upgrades on I-35 from S. Laredo Street to I-37/Camden Street and on I-10 from I-35 to Hildebrand Avenue. Completion is expected in fall 2025.

Drivers are advised to plan ahead for potential delays and consider alternate routes during this period. All lane closures are weather permitting and subject to change.

NOTE: The video in this story is from the update before the closure was extended through March.


For more information on traffic, you can click here to view our traffic page on KSAT.com. To view more on the current weather conditions, click here.

Click the links below for current road closures.


About the Authors
RJ Marquez headshot

RJ Marquez is the traffic anchor/reporter for KSAT’s Good Morning San Antonio. He also fills in as a news anchor and has covered stories from breaking news and Fiesta to Spurs championships and high school sports. RJ started at KSAT in 2010. He is proud to serve our viewers and be a part of the culture and community that makes San Antonio great.

Rebecca Salinas headshot

Rebecca Salinas is the Digital Executive Producer at KSAT 12 News. A San Antonio native, Rebecca is an award-winning journalist who joined KSAT in 2019.

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