Courtesy of Terry Butler

Update: Interstate 80 westbound at milepost marker 361 has now reopened following a crash which closed the westbound lanes for a couple of hours.

A spokesman for the Wyoming Highway Patrol says driver fatigue and inattention are being investigated as possible factors in the two-truck collision which shut down the westbound lane of Interstate 80 near Cheyenne Tuesday morning. 

Sgt. Kyle McKay says a KLM semi-tractor trailer was stopped by the side of the westbound lane of the interstate at around 6 a.m.

A Swift semi came up behind the KLM track, drifted into the emergency lane and struck the KLM truck from behind. McKay says there were no fatalities in the crash, but both drivers and a passenger in the Swift truck were taken to Cheyenne Regional Medical Center for evaluation.

Update 8:15 a.m. One westbound lane of Interstate 80 at milepost 361 has now reopened following a semi-tractor trailer crash Tuesday morning. Motorists should use the left westbound lane and expect some delays, according to WYDOT.

.All Westbound lanes of Interstate 80 are closed at milepost 361 near Cheyenne due to a multiple vehicle crash.

Unconfirmed eyewitness accounts at the scene indicate at least two semi-tractor trailers may have been involved in a collision.

Detours are posted. We will report further details as they become available.