Colorado road conditions: Spring snow causes mountain highway closures

The National Weather Service warns that travel through the mountains could be “hazardous” in some places and “very difficult to impossible” in others during April snowstorm.

Colorado road conditions: Spring snow causes mountain highway closures

An ongoing April snowstorm has closed a segment of Interstate 70 between Golden and the Eisenhower-Johnson Memorial Tunnel, according to the Colorado Department of Transportation.

As of 8:25 a.m., westbound I-70 was closed between Golden and the tunnel. The eastbound side from the tunnel to Silverthorne also closed Friday morning but reopened shortly before 7:20 a.m.

Both directions of U.S. 6 east of Silverthorne remained closed as of 8:25 a.m.

Plow trucks are active in the area and across the state, as workers battle the storm that could drop up to a foot of snow in the mountains through Saturday morning.

All major Denver highways remained open as of 7:30 a.m., per CDOT.

Winter Weather Advisories are in effect for much of the western half of the state, with the National Weather Service warning that travel through the mountains could be “hazardous” in some places and “very difficult to impossible” in others.

Colorado snow totals for April 18, 2025

This is a developing story and will be updated.