One westbound lane of Interstate 80 between Cheyenne and Laramie was closed as of noon on Saturday due to a crash involving a truck carrying ethanol.

Cleanup of the crash site was expected to take 12 hours or more, and drivers were being warned to exercise caution near milepost marker 338, where the accident occurred.

Meanwhile, Wyoming Highway 210 (Happy Jack road) was closed to commercial vehicles. A WYDOT news release says the single vehicle crash happened on Saturday morning when a tractor trailer carrying ethanol rolled over from the westbound lanes.

At last report hazmat crews were on the site of the crash.