We don't publish live or predicted travel times. For current conditions, closures and cameras use COtrip.org (CDOT's official traveler site) and the COtrip app.
Why I-70 gets so slow
The I-70 mountain corridor funnels most ski traffic through a few narrow points: Floyd Hill, Idaho Springs, Georgetown, the Eisenhower–Johnson Memorial Tunnels and Vail Pass. Add snow, a single crash or tunnel metering, and delays build fast. Weekend mornings westbound and weekend afternoons eastbound are the classic pinch points.
Timing strategies
- Go early. Leaving before the main wave usually helps.
- Return late. Après, dinner, or a final run can let traffic thin.
- Ski weekdays if your schedule allows.
- Stay overnight for Summit County and Vail trips.
- Choose an alternative: Eldora avoids I-70; Loveland skips the tunnel; the train or bus lets someone else drive.
Colorado traction law
During winter, Colorado can activate a Traction Law (and in severe conditions a Passenger Vehicle Chain Law) on I-70 and other mountain highways. Under these rules, vehicles need appropriate tires or traction devices, or 4WD/AWD with adequate tread. Fines can apply. Read the current rules on CDOT's winter driving page, and check rental car tire types before you leave DEN.
Closures and passes
- Eisenhower–Johnson Tunnels: may meter or close during incidents.
- Loveland Pass (US-6): the route to A-Basin from the east side; can close in storms.
- Berthoud Pass (US-40): the drive to Winter Park; steep and winding.
- Vail Pass: a frequent closure point affecting Vail and beyond.
Winter driving checklist
- Full tank of gas and washer fluid rated for freezing temps
- Ice scraper, blanket, water, snacks, phone charger
- Tires that meet traction-law standards
- Check COtrip before you leave and before you head home
- Slow down, leave following distance, and avoid sudden braking
Official resources
- COtrip.org — road conditions, closures, cameras
- CDOT winter driving — traction and chain law
- Bustang / Snowstang — CDOT bus service