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.

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.

Work began in October 2019 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 involves closing the on-ramp while work is done. The on-ramp is open through the winter, but as weather conditions allow work to be done, there can be daytime closures of this on-ramp. This ramp will close again April 1 and remain closed until the project is complete this summer.

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