It is believed the grain truck smashed into multiple vehicles, spilling its load on the Calder Freeway at the Diggers Rest-Bulla Rd overpass just after 2.30pm. All inbound lanes are closed at Diggers Rest Rd, with all motorists being sent off and back onto the freeway via the exit and entry ramps. Commuters have been urged to be patient and follow the direction of emergency services.More to come