(KRON) -- The California Highway Patrol (CHP) issued a SigAlert Thursday night following a traffic collision with injuries on eastbound I-80, west of Treasure Island Road, in San Francisco. The crash occurred around 7:53 p.m. and involved a motorcycle and vehicle, shutting down the left and center lanes. As of 8:16 p.m., the center lane had reopened. Commuters should expect delays or use alternate routes to avoid the area. There is no expected timeframe for the roadway to fully reopen. It is not clear what led to the incident. The extent of injuries was not disclosed by CHP. ...read more read less