Police have closed off a portion of the North Perimeter exit ramps while they investigate a serious collision Thursday morning. 

Police have closed the exit from eastbound North Perimeter on to southbound Main St., as well as the onramp from southbound Main St. to eastbound on the North Perimeter.

A caller to CHVN said it appears there was just one vehicle involved. The vehicle is rolled on its side in the grass. Police have several evidence markers on the roadway.

There are currently no delays in the area. The WPS says they expect the closure to last through the morning.