Summer to Fall 2025 Construction MapsThese maps highlight active construction projects along or near the I-70 Mountain Corridor, from Golden to the Utah border, during summer 2025.The I-70 Floyd Hill and I-70 West Vail Pass Auxiliary Lane projects will be particularly active this summer, so we encourage signing up for the text alert services described with each project below.For real-time information on statewide lane closures and traffic impacts, visit COtrip.org or use the COtrip Planner app....
Summer to Fall 2025 Construction Maps
These maps highlight active construction projects along or near the I-70 Mountain Corridor, from Golden to the Utah border, during summer 2025.
The I-70 Floyd Hill and I-70 West Vail Pass Auxiliary Lane projects will be particularly active this summer, so we encourage signing up for the text alert services described with each project below.
For real-time information on statewide lane closures and traffic impacts, visit COtrip.org or use the COtrip Planner app.
Location: East of Silverthorne (Exit 205) to Eisenhower-Johnson Memorial Tunnel Schedule: September 2025 to Fall 2026Traffic Impacts: Monday to Thursday daytime single lane and shoulder closures in both directionsWebpage: Coming soon.
Location: I-70 from the East Vail Exit to the Vail Pass Rest AreaSchedule: August 2021 to December 2026Traffic Impacts: Intermittent weekday 20-minute traffic and recreation path holds for rock scaling and avalanche fence installation. Expect single lane closures during both day and night.Text Alerts Signup: Text vailpass (one word) to 21000Webpage: I-70 West Vail Pass Auxiliary Lanes
Location: I-70 from Chief Hosa to MorrisonSchedule: July 2024 to Fall 2025Traffic Impacts: Westbound lane shift with reduced lane and shoulder widths on westbound side. Single and double lane closures during the night. Resurfacing work begins in mid-July.Webpage: I-70 Resurfacing from Chief Hosa to Colfax
Location: Clear Creek Canyon (US 6) from CO 119 to CO 58/CO 93Schedule: 2024 to late 2026Traffic Impacts: Daytime single lane closures and occasional overnight full canyon closures for construction of the Huntsman Gulch segment of the Peaks to Plains Trail.Webpage: Peaks to Plains Trail (Jefferson County Website)
Location: I-70 between Idaho Springs and EmpireSchedule: Open as toll lanes during peak period travel times, mostly on weekends and holidays.Traffic Impacts: Enter and exit the Express Lanes through the dashed lines only, do not drive in the Express Lanes when they are closed and do not travel in the Express Lanes with an oversized vehicle. When these lanes are closed, they are used as an emergency shoulder for disabled and emergency vehicles.Text Alerts Signup: Text xpresslanes (one word) to 21000Webpage: I-70 Express Lanes: Idaho Springs to Empire
Location: I-70 from west of Evergreen to eastern Idaho SpringsSchedule: Summer 2023 to late 2029Traffic Impacts: I-70 lane and ramp closures, and flaggers and alternating traffic on US 40. Expect 20-minute I-70 traffic holds for rock blasting through the end of 2026. Watch for new traffic patterns, narrowed lanes and shoulders and reduced speed limits. Clear Creek Greenway Trail closure between US 6 and Hidden Valley.Text Alerts Signup: Text floydhill to 21000Webpage: I-70 Floyd Hill Project
Find the Programmatic Environmental Impact Statement, Record of Decision, and other related documents
Find information about current CDOT studies and projects in the I-70 corridor
For its I-70 Mountain Corridor program, CDOT follows a CSS process
The collaborative effort was charged with reaching consensus on a recommended transportation solution for the corridor