Happy Canyon Road and Lagae Road Intersection

Project Overview

One of the 2024 Road Solutions projects, is the construction of improvements to the Lagae Road and Happy Canyon Road intersection. Project improvements will include:

    • A roundabout at the intersection of Lagae Road and Happy Canyon Road
    • Safety and traffic flow efficiency improvements

This work will be completed as a part of an early action item for the eventual improvements to the I-25 and Happy Canyon Road bridge and interchange. The roundabout will tie into the eventual final construction of the bridge/interchange project.

If you have questions about the project, please email communications@castlepinesco.gov or call 303-705-0200.

Schedule

  • 2023 - design and engineering services completed
  • January 2024 - contract awarded for construction services
  • Late February 2024 - construction anticipated to begin
  • July 2024 - anticipated project completionTraffic Impacts

To complete construction as quickly as possible and to maintain safety for workers and the traveling public, a road closure will be in place during construction. Lagae Road, between Happy Canyon Road and Chase Lane, will be closed beginning Saturday, Feb. 24. Detours will be in place via Castle Pines Parkway to access I-25 or Happy Canyon Road. Please follow construction signage and drive safely.

Detour

During the Lagae Road closure between Happy Canyon Road and Chase Lane, traffic will be detoured north to Castle Pines Parkway to access I-25. See the detour route map for details.

Detour map for the construction of the roundabout at Lagae Road and Happy Canyon Road.

*click on the image above to view the suggested detour route

Funding

The total budget for the project is $5.35 million with Douglas County contributing $1.5 million and the City contributing $3.85 million.

These project totals include realigning a portion of the existing Happy Canyon Road located within unincorporated Douglas County, constructing a roundabout on Lagae Road, constructing the east/west leg that connects directly from the proposed roundabout to the existing I-25 / Happy Canyon Road Interchange, constructing stormwater facilities, and making minor modifications to the segment of Lagae Road located immediately to the north of the roundabout.  Some of these roadway modifications are being completed as early action items for the eventual reconstruction of the Happy Canyon and I-25 interchange.

Project Visualization

Click on the image below to view a 3-D visualization of the project area, including the roundabout design. The visualization is for representative purposes only. The final product may have slight variations.

HC Roundabout

*click on the image above to view the visualization video of the project area

Roundabout Design Concept

Roundabout Design Concept Map

*Click image to enlarge

Subscribe for Updates

 


Want to learn more about our long-term Road Solutions?

City Council has created a Plan of Action for the Streets of Castle Pines. Visit our Road Solutions page and find out how the City plans to invest heavily in our infrastructure over the next several years.


Stay Informed on the Progress of this Project: