Intersection of Founders Parkway and Allen Way

Construction Update

  1. With big projects, come big impacts. Founders Parkway and Allen Way is one of the busiest intersections in Castle Rock. Improvements in this area are vital to the safety and mobility of the Town.

    Allen Way will be reopened on Friday, Sept. 20. The eastbound left turn lane will remain closed as crews complete work. Allen Way will be accessible from all other points. Drivers can expect delays as crews work on the median. 

    Stay up to date on this road project by checking here for updates and closures. To report a concern, call the Public Works project hotline at 720-733-2460 and leave a detailed message.

Improvements Ahead


The intersection of Founders Parkway and Allen Way is one of the busiest in Castle Rock. An effort to improve that intersection is underway. The goal of the improvements is to ease congestion and increase access to Interstate 25.

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Background


In 2015, the Colorado Department of Transportation, which owns and operates the Founders Parkway corridor, reconstructed the concrete on Founders Parkway. However, CDOT did not have the funding at the time to improve the intersection at Allen Way. 

Hearing driver concerns, the Town applied for federal funding in 2015 when CDOT reconstructed the concrete on Founders Parkway but did not have the funding to improve the intersection at Allen Way. The grant was awarded to the Town through the Denver Regional Council of Governments.  

Improvements will include:


  • additional eastbound left-turn lane from Founders Parkway to Allen Way
  • dedicated right-turn lane from Founders Parkway to Allen Way
  • additional southbound right-turn lane from Allen Way to westbound Founders Parkway
  • additional I-25 northbound on-ramp lane
  • second northbound through-lane at Allen Way and Allen Street

Timeline


Town Council on June 18, 2019 approved a construction contract with Noraa Concrete Construction Corporation, as well as an intergovernmental agreement with CDOT. Work at this intersection is expected to begin in July and take approximately 90 days to complete. 

Project budget and funding


Total funding for construction is $2,642,210. 

Construction funding breakdown

Entity Funding contribution
Federal Grant 
*regional Transportation Improvement Program, 
administered through the Denver Regional Council of Governments
$1,716,168
Colorado Department of Transportation $280,000
Douglas County $250,000
Castle Rock $396,042