A car crash last night caused nearly 13,000 pounds of cooking oil to spill into the Crooked River.
The crash occurred around 10:45 Tuesday evening on US-31 south of M-68 in Alanson.
The semi-truck tried to avoid colliding with a pick-up truck traveling the opposite direction. The two trucks came in contact with each other, causing the semi to roll over. The semi was carrying used cooking oil, which was spilled and eventually got into the storm drains that empty into the Crooked River.
Crews are still on the scene attempting to clean up the spilled oil. The Crooked River Lock is closed to keep boaters out of the contaminated area.
The driver of the semi-truck, Randy Lampros, 48, was transported to McLaren Northern Michigan Hospital.
The crash is under investigation.