Emergency crews have cleared the scene of a tractor-trailer crash that occurred overnight Thursday on westbound Interstate 94 near Jackson Road in Ann Arbor.
The Ann Arbor Fire Department responded around 12:10 a.m. after the semi driver reportedly fell asleep behind the wheel and breached the median wall, sending concrete debris into the eastbound lane and causing several other crashes.
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Both the eastbound and westbound lanes of I-94 were closed for several hours while officials cleared the scene, and all lanes have since reopened.
The truck was carrying a variety of hazardous materials, including a 55-gallon drum containing 38% nitric acid — which fully ruptured, spilling its contents onto the shoulder of the freeway.
The Washtenaw County Hazardous Materials Response Team were called to assess the scene and conduct atmospheric monitoring. Crews are using sodium bicarbonate to neutralize the acid and the spill poses no risk to the public, officials said.
Michigan Department of Transportation, Washtenaw County Road Commission, Michigan State Police, Pittsfield Township Fire Department, Huron Valley Ambulance and HART assisted on scene.
No injuries were reported.