UPDATE: The crash happened near mile marker 451.
A Montana Highway Patrol trooper said the male driver of a truck pulled out to pass a semi then came across both lanes and then went off the shoulder and through the fence.
Lockwood and Billings firefighters had to extricate the man from the wreckage.
Injuries are unknown, but he was conscious when taken by ambulance to the emergency room.
No other occupants or vehicles involved.
Both lanes were open at about 9:30 a.m.
BILLINGS – Traffic was backed up on I-90 westbound on Monday morning following a crash near Coulson Park.
According to the Montana Highway Patrol, the crash was an accident with injury.
A view from the KTVQ First Interstate Bank I-Cam shows emergency crews on scene.
A portion of the fence along the westbound lane appears to have been damaged.
This is a developing story, check back for updates.