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

How will the I-70 Mountain Express Lane Work?

Picture 4


picture 2

Fall 2015: Express Lane Closed

picture 3

Fall 2015: Express Lane Open

Click here to view the weekly lane closure report.

Current Construction Activity:

Now that the Labor Day holiday has passed and tourist traffic along the I-70 mountain corridor is on the decline, crews will be doing more daytime work.

Anyone traveling through Clear Creek County on Monday through Friday should plan for up to 30 minute delays in the eastbound direction between the hours of 8 a.m. and 3 p.m. and up to 30 minute delays in the westbound direction between the hours of 10 a.m. and 5 p.m.

Grading and paving work will also commence in the SH-103 interchange (Exit 240) on Monday, Sept. 28. This work will take about three weeks to complete and will involve the following travel restrictions:

  • The westbound I-70 off-ramp to Exit 240 and the on-ramp to westbound I-70 from this interchange will both close Monday at 6 a.m. and remain closed until Friday, Oct. 2, at 4 p.m. These ramps will reopen for the weekend but will again be closed from 6 a.m. Monday, Oct. 5, until 4 p.m. Friday, Oct. 9. 
  • Because crews will be working in the intersection on the north end of the bridge the weeks of Sept. 28 and Oct. 5, vehicles will not be permitted to travel over I-70 during the weekday hours these two weeks. If it is deemed safe to do so, crews will open the intersection during the overnight hours for travel over the bridge. The westbound on- and off-ramps will remain closed throughout the week, however. 
  • During the week of Monday, Oct. 12, work will be done on the south end of the bridge, requiring alternate closures of the eastbound off-ramp and on-ramp as work is done on one side of the bridge and then the other. During this week, drivers will be able to travel north and south over the bridge, but the bridge will be reduced to one lane of travel.

  Some additional notes about this work:

  • While crews are working in the north intersection, access will be maintained in and out of the alleyway on the north side of I-70.
  • Flaggers will be on site during daytime hours to assist pedestrians over the bridge.
  • Because there will be periods of time when the subgrade must settle and each lift, or layer, of asphalt must cool, there will be times throughout these three weeks when you might not see crews working.
  • Monday, Sept. 28, is a "prep" day to get ready for the paving work that will begin on Tuesday, so again you might not see a lot of activity on this first day.

Please click here for full details about this work.

Swipe table to see more content

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

Swipe table to see more content
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