A nearly 3-mile stretch of U.S. 36 westbound toward Boulder was closed for about 2½ hours Monday morning due to a “serious collision” in Broomfield, the Broomfield Police Department said.
The closure was announced at 8:37 a.m. and the highway was reopened around 11:10 a.m.
Traffic was diverted off the highway at Flatirons Crossing Drive, and U.S. 36 was closed from there to Colo. 170 in Superior, according to the Colorado Department of Transportation.