Update 2:11am August 28th: Exit 172 on State Route 58 is now open. Update 1:30pm: One Westbound lane is open. Exit 172 is now closed. Updated Post 1:16pm: Attention Drivers: State Route 58 Westbound at Exit 172 near Mojave is closed. Original post: ATTN DRIVERS: Caltrans District 9, CHP - Mojave and other emergency personnel are responding to a trailer fire on westbound State Route 58 near Exit 172. | Caltrans District 9