Prepare for traffic this morning, San Antonio. A major crash has caused traffic delays on Highway 90 in San Antonio on Tuesday, March 31, according to the traffic monitoring site SigAlert.

The crash occurred around 7:34 a.m. on Highway 90 West at Masterson Road and Texas Research Parkway, according to SigAlert. Traffic is backed up to Loop 1604, with drivers traveling at about 4 to 6 miles per hour, SigAlert reports. 

Cameras from the Texas Department of Transportation show traffic is at a standstill along Highway 90 near the Montgomery exit. SigAlert reports that drivers should expect delays up to 30 minutes as of 8:07 a.m.

It’s unclear how many vehicles were involved or whether anyone was hurt at the time. Make sure to visit the MySA traffic page for the latest transportation news, including traffic delays and construction projects around San Antonio.