Members of Arvada Fire are currently on scene of a jackknifed semi-tractor on I70 west bound at Wadsworth Blvd. At least two lanes of westbound traffic are currently closed as crews work on scene. As of 4:09PM, the incident was updated to include a hazmat response because of the material being transported by the semi.

4:11PM: Arvada Fire staff advised the crash involved only a single semi and no reported injuries. Colorado State Patrol has been requested to assist with blocking traffic.

5:23PM: One fire engine remains on scene as cleanup continues but the the impact on traffic should be minimal.