SAN FRANCISCO (KRON) -- A crash on the Golden Gate Bridge shut down all northbound lanes for nearly an hour Tuesday morning. The California Highway Patrol announced the closure at 6:42 a.m. At the time, authorities believed the closure would last for 20 to 30 minutes. All lanes were reopened by 7:3 0 a.m. Details of the collision were not immediately available. Drivers were advised to seek alternate routes and expect delays. ...read more read less