2024 Monarch Boulevard Reconstruction

Project Overview

As a part of the 2024 Road Solutions projects, efforts began in March 2024 on Monarch Boulevard between Castle Pines Parkway and Glen Oaks Avenue. The project improvements include:

• • • Complete roadway tear out and asphalt replacement
    • Safety enhancements
    • Stormwater infrastructure improvements
    • Six-foot bike lanes
    • 4,300 feet of new water line by the Castle Pines North Metropolitan District

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

Schedule

• Project start: March 17, 2024
• Phase 1 completed: July 15, 2024
• Anticipated Phase 2 completion: September 13, 2024
• Phase Three start: September 13, 2024
• Phase Three completion: October 23, 2024
• Phase Four start: October 23, 2024
• Anticipated Phase Four Completion: early December 2024
• 2025 Monarch Boulevard Reconstruction will begin in June 2025.

What to Expect

• Starting March 17, 2024, Monarch Boulevard will be closed to through traffic to allow for the efficient completion of this project, anticipated December 4, 2024. This closure will ensure the safety of both workers and the traveling public and establish clear detour routes to minimize inconvenience.
• The project will be done in four phases. Phase One, Phase Two, and Phase Three have been completed as of October 23, 2025.
• Starting October 23, 2024, Monarch Boulevard will be closed to through traffic from Briar Dale Drive/Burggarten Drive north to Berganot Trail to allow for the efficient completion of Phase Four, anticipated to be completed December 4, 2024. This closure will ensure the safety of both workers and the traveling public and establish clear detour routes to minimize inconvenience.
• The installation of a new water line during the road construction will allow an upgrade to the Castle Pines North Metropolitan District water infrastructure. It will also decrease costs by completing both projects simultaneously. It will reduce the overall project duration and traffic impacts compared to two separate projects.
• Homes within the road closure area will remain accessible. This access will be exclusively for local traffic and emergency services only.
• There will be no impacts for the remainder of the 2024 school year. In June 2025, construction will include work from Berganot Trail to Winter Berry Place.

Current Traffic Closures Detours 

• Beginning October 23, Monarch Boulevard will be open to local traffic from Glen Oaks Avenue to the intersection of Burggarten Drive and Briar Dale Drive. This will mark the completion of Phase Three of the Monarch Boulevard reconstruction project.
• Homes within the road closure area will remain accessible during construction with two-way travel maintained at the intersection of Burggarten Drive. The intersection of Briar Dale Drive and Monarch will be closed.
• This access will be for local traffic and emergency services only.
• The intersection of Berganot Trail and Monarch Boulevard will be closed during construction.
  
• Phase Four Detour Information
  • Through traffic on Monarch Boulevard will continue to use the Buffalo Trail detour.
  • Neighborhoods with access from Burggarten Drive: During the closure, access will be available via two-way traffic south of the intersection of Burggarten Drive.
  • Neighborhoods with access from Briar Dale Drive: During the closure, access will be available through Briar Cliff Drive.
  • Neighborhoods with access from Berganot Trail: During the closure, access will be available through Buffalo Trail via Rockcress Way.

Project Visualizations

Click on the video below to see a rendering of the Monarch Boulevard reconstruction and improvements.

View the images below for renderings of the project. These images are representative in nature and may differ from the completed project. Click on each image to view a larger version of the rendering.