(KRON) -- The California Highway Patrol is advising that a severe traffic alert has been issued due to an injury crash on the southbound lanes of Highway 101 in Mountain View Friday afternoon. The crash occurred just north of San Antonio Road. SF Fleet Week Air Show, Blue Angels set to take to the skies The left and center lanes are blocked as a result of the crash. Drivers are being advised to expect delays, use alternate routes, and avoid the area. There is no estimated time to reopen the roadway. This is a developing story. Check back for updates.