Colorado Approves $300 Million Plan to Improve I-70 Access to Ski Resorts

Colorado has approved a $300 million, 10-year plan to overhaul the I-70 Mountain Corridor - the main artery connecting Denver to the state's major ski resorts.

The Colorado Department of Transportation (CDOT) approved the plan on 21 May, with sign-off from the 11-member Colorado Transportation Commission. It covers more than 250 projects across the state, with a clear focus on fixing roads, improving safety, and reducing the traffic bottlenecks that have frustrated skiers for decades.

What Is the 10 Year Plan?

The plan sits under a broader statewide initiative called "Your Transportation Plan," designed to provide a long-term investment strategy for Colorado's transport network. It was developed with input from local governments, community organisations, and the public - which gives some indication of how politically significant I-70's congestion issues have become.

For anyone who has driven from Denver to Vail on a winter weekend, the problem is self-evident. The trip takes around 90 minutes on a quiet weekday. On a Saturday in peak season, that number can multiply considerably as skiers and snowboarders funnel toward the same resorts along the same highway.

The Two Key Investments

The plan targets two sections of the I-70 corridor specifically.

The first covers the most deteriorated sections of I-70 through Garfield and Eagle Counties, with a focus on guardrail replacements and upgrades in the Glenwood Canyon area. Glenwood Canyon is one of the more geologically complex sections of the highway and closes regularly due to rockfall and flooding. CDOT has allocated $11 million for this work in the first four years, with a further $23 million over the following six.

The second - and larger - investment targets West Vail Pass, which carries some of the heaviest ski traffic on the entire corridor. Planned work includes an additional lane on the uphill section, a deceleration lane on the downhill portion, runaway truck ramps, a wildlife underpass, and wildlife fencing. Total allocation: $77 million, split $50 million in years one through four and $27 million in years five through ten. That makes West Vail Pass the single largest investment in the plan's mountain corridor component.

What's Already Underway

The 10 Year Plan doesn't start from scratch. CDOT has been working on I-70 improvements for years, with the most significant current project being the Floyd Hill upgrade - adding a new westbound express lane at one of the highway's worst chokepoints. The lane runs eight miles from Floyd Hill before connecting with existing express lanes at the Veterans Memorial Tunnel. Completion is expected in 2028.

The new plan builds on that progress, adding capacity in further locations and upgrading safety infrastructure along the corridor. When the Floyd Hill project wraps and the 10 Year Plan investments roll through, the combined effect should represent a meaningful improvement to what has long been a genuinely frustrating drive.

For the millions of skiers who make the I-70 run each winter - whether they're heading to Vail, Breckenridge, Keystone, or Copper Mountain - it's an overdue upgrade to infrastructure that has lagged well behind demand.