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I-35 on South Side reopens after 4-vehicle crash involving 18-wheelers

The lanes have since reopened

The northbound and southbound lanes of IH-35 South near Somerset Road and New Laredo Highway are closed after two 18-wheelers crashed. (Copyright 2025 by KSAT - All rights reserved.)

SAN ANTONIO – The northbound lanes of Interstate 35 on the South Side were closed due to a four-vehicle crash involving two 18-wheelers.

The crash happened around 11:45 a.m. Thursday on Interstate 35 South at New Laredo Highway and Somerset Road.

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The lanes heading in both directions were closed on Thursday afternoon due to the crash, but the lanes have since reopened.

San Antonio police said construction in the area had slowed traffic, and an 18-wheeler traveling southbound on I-35 swerved to avoid colliding with the vehicles ahead.

The 18-wheeler crashed and drove into the northbound lanes.

A total of four vehicles were involved in the crash.

Police said it is unknown how many people were injured, but no one was killed.

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.