CRIPPLE CREEK, Colo. (CBS4)– A sinkhole has closed State Highway 67 just north of Cripple Creek.

The sinkhole was discovered at about 10:15 a.m. Saturday. Highway 67 was closed to traffic in both directions because of the hole that opened on the roadway. It measures about two feet wide.

The sinkhole appears to have developed over a mine shaft. The hole widens to about five feet wide under the asphalt. It is estimated to be about 20 feet deep.

Crews with the Colorado Department of Transportation are on scene evaluating the situation. Engineering and geotechnical crews have been called to the sinkhole as well.

The closure length of Hwy. 67 will depend on what the crews determine once they have examined the sinkhole. When repairs will begin or be completed remained unknown Saturday afternoon.

Traffic is being detoured using County Road 82.