CLEAR CREEK COUNTY, Colo. (CBS4)– A car fire inside the Eisenhower Tunnel kept all lanes of Interstate 70 closed on Wednesday afternoon.

The burning car was reported in the westbound lanes inside the tunnel about 1:35 p.m. from the Colorado Department of Transportation.

All lanes reopened about an hour later.

Traffic backup along Interstate 70 from a closure at the Eisenhower Tunnel.(credit: CBS)

No one was injured in the fire. What caused the car to burst into flames is being investigated, but the fire was extinguished.

(credit: William Singer)

Colodardo Department of Transportation officials say the new fire suppression system was not used because the fire was not big enough.

Eisenhower Tunnel (credit: CBS)

There were significant delays in the area due to the tunnel closure.