I-70 Mountain Corridor: Veterans Memorial Tunnels to Continental Divide

Several independent road improvement projects taking place between the Veterans Memorial Tunnels in Idaho Springs and Loveland Pass at the top of the Continental Divide will help make travel along the I-70 mountain corridor safer and more efficient.

Select each menu below for more information on each project. CDOT is managing these projects collectively to minimize traffic impacts, and ensure the mountain communities along I-70 remain open and accessible to local residents, tourists, and recreationists.

Construction of the Westbound I-70 Mountain Express Lane will continue throughout the winter between Floyd Hill and Empire junction. Both westbound lanes will be open during peak travel periods, but drivers will encounter narrower lanes, shoulder closures and concrete barriers along the roadway to separate construction work zones from moving traffic.

Please follow posted speed limits and make sure your vehicle is prepared for winter conditions along I-70 by visiting To stay updated on roadway conditions, click on the CDOT Alerts icon at the bottom right.

I-70 Project Map Nov. 1 2019

Construction of the Westbound I-70 Mountain Express Lane began in July 2019. Similar to the eastbound Express Lane already in place, this 12-mile long lane will extend from the Veterans Memorial Tunnels in Idaho Springs to Empire Junction. Once complete, the westbound Express Lane will feature traffic management systems to improve mobility and provide westbound drivers with a reliable, time-saving option during peak travel periods.

Construction of the Express Lane is expected to be completed in late 2020, with testing of the tolling system features continuing until spring 2021 before the lane can open.

Travel Impacts

This project will entail shoulder closures and westbound lane closures during non-peak hours, but much of the construction can be done while keeping both westbound lanes open by staging construction equipment in the eastbound Express Lane. This will minimize inconveniences to drivers by providing access to mountain destinations and events.

Learn more.

In late May 2019, work began on the two-lane bridge that will ultimately connect the Fall River Road/I-70 interchange at Exit 238—just west of Idaho Springs—with Stanley Road. This bridge is expected to open to vehicles and pedestrians by the end of January. For more information about this project and to see photos of the new bridge structure, click on the Learn More button.

Travel Impacts

For one week in November, the eastbound I-70 off-ramp to Fall River Road and the on-ramp access to eastbound I-70 from Fall River Road will be closed for grading and paving work.

During construction, Stanley Road will be reduced to one lane with a temporary traffic signal in place to guide alternating directions of traffic using the one-lane road.

No weekend or holiday work is anticipated on this project.

Work begins in early October to replace the sound wall along the Silver Plume on-ramp to westbound I-70 near Mile Point 225. This work will include ramp safety and drainage improvements and will involve closing the on-ramp while work is done. The on-ramp will close Thursday, Oct. 3, and reopen in November for winter travelers. While the on-ramp is closed this fall, anyone wanting to travel west on I-70 from Silver Plume will need to take the Frontage Road to Bakerville to enter westbound I-70. The on-ramp will close again in spring 2020 to finish the work.

Colorado: The Official State Web Portal