One person is dead and a construction worker was taken to the hospital in critical condition after a serious accident on northbound Interstate 25 near 144th Avenue Tuesday morning.

The Thornton Police Department tweeted that the crash happened after a vehicle lost control while exiting I-25 onto 144th Avenue and rolled over into a construction zone, hitting the worker.

The crash caused police to close one lane of I-25 in the area and the entire 144th off-ramp.

Long delays were reported.

The person who died has not yet been identified.