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US 36 Express Lanes Project

US 36 between Denver and Boulder opened as a toll road in 1951. The toll road bonds were paid off early and the tolling infrastructure was removed in 1968. When it was built, this four lane road had only one interchange between Denver and Boulder. In response to rapid population growth, there are now 10 interchanges along US 36 between I-25 and Boulder. However, the number of main through-lanes has remained at four.

In December of 2009, the Colorado Department of Transportation completed an Environmental Impact Statement which described Preferred Alternative improvements to the corridor which would be implemented in the future as funding became available. The main elements in the Preferred Alternative include one buffer-separated managed lane in each direction, Bus Rapid Transit (BRT) ramp stations, auxiliary lanes between most interchanges, and a bikeway.

These two projects will be the first steps in implementing improvements described in the US 36 Environmental Impact Statement.

Plenary Roads Denver Seeking Contractors for I-25 Mill and Overlay Project

Plenary Roads Denver is issuing a Request for Bid from contractors for an I-25 mill and overlay project as part of the US 36 Express Lanes Project. The bid closes on Monday, Sept. 29, at 2:30 p.m. MST. Plenary Roads Denver will hold a mandatory pre-bid site walk on Friday, Sept. 19, at 9:45 a.m. at the CDOT Maintenance Facility Project Trailer at East 70th Ave. and Pennsylvania St. All questions can be directed to Simon Stachnik, at 303-905-1340 or simon.stachnik@plenarygroup.com.

Project documents are below:

Request For Bid
Plans
Special Provisions
Responses to Contractor Questions
Special Provisions - Addendum 1 with track changes
Plan Revisions - Addendum 1
Bid Schedule - Addendum 1

CDOT Update on US 36 Public-Private Partnership: Understanding the Facts

The public asked CDOT for more details about the upcoming public-private partnership (P3) for the US 36 corridor.  We wanted to take this opportunity to explain what is happening with the P3 and the contract as there has been a lot of misinformation released. Read more here...

US 36 Public-Private Partnership Concession Agreement

CDOT released the concession agreement for the US 36 corridor on February 14, 2014, upon further discussion with its partner Plenary Roads Denver.  The document contains the contract provisions, standards of service and other agreements to which each agency will be held.  It also includes 27 schedules which describe agreements ranging from maintenance, to construction requirements.  Four of the schedules are summarized at the request of Plenary Roads Denver due to the proprietary information. The documents can be found on the CDOT website at: http://www.coloradodot.info/programs/high-performance-transportation-enterprise-hpte/reports/concession-agreement/

Project Contact

Mark Gosselin
CDOT Region 1
Phase I Project Director
(303) 404-7020 Office
mark.gosselin@state.co.us