A crash had traffic down to one lane on westbound Interstate 94 at Fletcher Road near Chelsea Thursday morning.

The crash was believed to be blocking the left lane, a dispatcher with the Washtenaw County Sheriff's Office said.

A Google map showed traffic backing up on both sides of the freeway.

It was not clear whether the crash had injured anyone. Michigan State Police were on the scene, the dispatcher said just after 8 a.m.

View Crash 08/16/12 in a larger map