Projects

CO 56 to CO 402: Segment 6

seg6 graphicProject Highlights:

Improve I-25 Mainline:

  • Two general-purpose lanes and one tolled express lane in each direction
  • Accommodations for three general-purpose lanes and one tolled Express Lane in each direction in a future ultimate condition
  • Full-width shoulders
  • Modern design to meet current standards
  • 12 new bridges
  • Incorporation of Intelligent Transportation Systems (ITS)

Improve Colorado Highway (CO) 60 Interchange:

  • Four through-lanes and sidewalks on CO 60
  • Car pool parking lot

Improve Larimer County Road (LCR) 16 Interchange:

  • Reconstruction to a full-movement interchange, providing direct access onto I-25
  • LCR 16 will cross over I-25

Improve State Highway 402 Interchange:

  • Four through-lanes and sidewalks on CO 402
  • CO 402 will cross over I-25
  • Gentler curve on I-25 through the interchange
  • Car pool parking lot

Improve frontage roads:

  • Reconstruction with full-width shoulders
  • Relocation of intersections at CO 60, LCR 16, and CO 402

Project Benefits

  • Safer corridor
  • Replaces aging and functionally obsolete infrastructure
  • Provides drivers choice of a new reliable travel lane
  • Reduces travel time
  • Increases public transit options
  • Contributes to a continuous managed lane system from Denver to Fort Collins 

Project Costs

Estimated costs to build near-term improvements on Segment 6 range from $228 million to $317 million.  This cost estimate used 2015 dollars and is for building two general-purpose lanes and one tolled Express Lane in each direction. Actual project costs are subject to market conditions, such as the value of property acquisitions, material costs, and labor costs at the time the project goes to advertisement.

Project Schedule

The design plans for the ultimate build-out of Segment 6, which includes three-general purpose lanes and one tolled Express Lane in each direction, are currently five percent complete. The Final Environmental Impact Statement for this project was completed in 2011; however, no Record of Decision has been signed for this segment. The project team will continue to advance the design plans to prepare for future funding opportunities and to support the phased implementation of the I-25 North Corridor.

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