Overnight closures of the Interstate 70 Eisenhower Johnson-Memorial Tunnel are scheduled to begin Monday, August 31, and will last through early October.
All Tunnel traffic will be directed through one tunnel bore while the other bore is closed for paving operations. Ten to fifteen-minute travel delays are expected from 10:00pm to midnight with minor delays for the rest of the nighttime hours.
August 31 to September 3 AND September 8 to 18:
• The eastbound tunnel will close overnight, 10:00pm – 6:00 am. Traffic will be detoured through the westbound tunnel.
• No planned closures over the Labor Day weekend, September 4 to 7.
September 21 to October 8:
• Westbound tunnel will be closed 10:00pm – 6:00 am, and traffic will be detoured through the eastbound tunnel.
Arrangements have been made to ensure emergency vehicles will be able to get through quickly during the closures.
The schedules above could change depending on the weather and other factors. Travelers should check cotrip.org for the latest information on road work, closures, and other conditions.