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Safety Upgrades Require Overnight Closures at the Eisenhower/Johnson Memorial Tunnels

Colorado Department of Transportation Colorado Department of Transportation

Skiers and snowboarders, be advised: Starting Monday, April 6, for 20 nights the Colorado Department of Transportationwill be conducting nightly closures atthe Eisenhower/Johnson Memorial Tunnels to install a linear heat detection system, part of a larger fire suppression system project. Work will take place during the overnight hours of 8 p.m. to 6:30 a.m. each Sunday through Thursday night, with tunnel closures beginning at 10 p.m. each night.

Each tunnel bore must be closed while the system is being installed, but CDOT will keep one tunnel open at all times and use pilot cars to escort alternating directions of I-70 traffic through the open tunnel. Traffic will be held for up to 20 minutes, but motorists could experience longer delays as the queues are cleared in each direction.

For the most up-to-date travel information for I-70, visit, download the CDOT Mobile app, sign up for GovDelivery or call 511.

For more information on this project, visit If you have specific questions for the project team, please reach out to them at