Update 12:57 p.m.: All lanes were reopened as of 12: 30 p.m.
Original Post: Caltrans officials say southbound Highway 99 at Grant Line in Elk Grove has been shut down due to a big rig crash.
A tweet from the agency says a big rig crashed into a train trestle.
All southbound lanes have been blocked and vehicles are being asked to detour.
SB 99 at Grant Line closed due to big rig crash into train trestle. Vehicles exiting at Grant Line. ETO 2 hours.— Caltrans District 3 (@D3PIO) October 16, 2015