SAN FRANCISCO (CBS SF) — An investigation into an injury accident on the westbound Bay Bridge to the west of Treasure Island shut down the two right lanes for almost 90 minutes Friday, according to authorities.

At about 11:08 a.m., CHP issued a severe traffic alert after the accident with injuries on westbound I-80. A photo posted by the CHP San Francisco Twitter account showed multiple police and fire units at the scene. There were no details regarding how many vehicles were involved or the condition of the person or persons injured.

The two right lanes remained blocked until shortly before 12:30 p.m., CHP officials said.

Motorists are advised to expect residual delays.