Southbound Interstate 25 closed south of Windsor early Thursday morning after two semi-trucks were involved in a crash that spilled fuel on the highway.
The Colorado Department of Transportation tweeted about the crash at around 5:30 a.m. The highway finally reopened at 10 a.m.
Colorado State Patrol said two semis were involved in the crash, and that no one was injured.
Fuel did spill onto the road, and crews had to clean it up.
One of the trucks was carrying ammunition, CSP said.
Conditions were snowier in northern Colorado than in the Denver metro area Thursday morning, with 1 to 3 inches of accumulation expected.
This made for icy road conditions.