A motorcyclist died Friday night following a collision with a vehicle on Hancock Expressway in Colorado Springs.

According to Colorado Springs police, the crash occurred around 10 p.m. beneath the South Circle Drive bridge. The motorcyclist was pronounced dead at the scene, while the vehicle’s driver sustained non-life-threatening injuries and was transported to a local hospital.

The site of the crash is an active construction zone for the Circle Drive Bridges Replacement Project.

The construction area has been subject to periodic lane closures and reduced speed limits. Traffic through that stretch of Hancock has been narrowed to one lane in either direction.

Police said the specific cause of the crash was “unknown at this time.”