The only road into Longmont is at I-25 and Highway 66 to Main Street. Any north-south travel in Longmont is cut off by the St Vrain River.

Residents are advised to stay home or at a safe, indoor location. Residents of South Longmont will find road travel to be extremely difficult as there are no known roads open between South Longmont and I-25.

An updated road closure map is available on the City of Longmont’s website.