Eastbound I-70 Peak Period Shoulder Lane


The project, part of CDOT’s comprehensive plan to improve travel in the I-70 Mountain Corridor, will upgrade 13-miles of Eastbound I-70 within CDOT’s existing right of way. The upgrades will create the I-70 Mountain Express Lane; a wide shoulder that – only during peak travel periods – will operate as a third travel lane. The I-70 Mountain Express Lane will be dynamically priced to keep traffic moving. Prices will lower when CDOT wants to encourage drivers to use the lane and rise as the lane reaches capacity. Click here for more information on how express lanes operate.

Utilizing the shoulder to create an express lane within the existing I-70 right-of-way during peak periods instead of adding a full lane has several benefits:

Project Benefits

  • Dynamic toll pricing keeps traffic moving: prices lower to encourage drivers to use the lane and rise as the lane reaches capacity
  • Reduces travel time by nearly half from the Eisenhower/Johnson Memorial Tunnels to the top of Floyd Hill, resulting in an average 30-minute time savings
  • Provides drivers with the choice of a new more reliable travel lane
  • Avoids overbuilding I-70, by using the shoulder as a third lane, during peak hours
  • Enhances recent Twin Tunnels (Veterans Memorial Tunnels) improvements
  • Allows for faster speeds in all lanes, thus decreasing overall travel time

Click here to view the weekly lane closure report.

Current construction activity:

The evening of Sunday, July 12, crews are scheduled to start asphalt milling operations at night across the entire length of the eastbound I-70 corridor. This work will require single lane closures during the overnight hours between mile markers 230 and 243. Crews will start on the west end of the project (near the Empire Junction) and work their way east.

It will take most of the summer to complete the entire length of the project, with crews scheduled to work Sunday through Thursday nights. This work is scheduled to begin at 7 p.m. on Sunday nights and 5 p.m. on the other nights. Crews are scheduled to be off the road by 7 a.m. the following morning, but there could be times when paving work must continue a little while longer to ensure the roadway is safe to open for travelers.

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How will the I-70 Mountain Express Lane Work?

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Fall 2015: Express Lane Closed

Fall 2015: Express Lane Open

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Stay Informed?



Click here to view the weekly lane closure report


Bilingual Project hotline: 303-223-6581


Have a question? Click here to contact the project team

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Project Contact

For more information, please contact:

Neil Ogden
CDOT Project Manager

Emily Wilfong
CDOT Communications Manager
303 757-9484

Planning a Trip?

Slower speeds in construction zones may temporarily delay travel times.  We want to make sure you have access to events, trails and towns that make Colorado great. Use the resources below to help you prepare:

  • Sign up for free email and text alerts with CDOT’s GovDelivery service
  • Call the project hotline (303-223-6581) to listen to the most recent lane closure report
  • Visit
Colorado: The Official State Web Portal