Intersection of Founders Parkway and Allen Way

Design begins on improvements


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:


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

Timeline


Town Council on Jan. 17 approved a contract with engineering firm Felsburg, Holt & Ullevig as well as an intergovernmental agreement with CDOT. Design is expected to be complete in 2017, with construction starting in 2018. 

Project budget and funding


The total cost of the project is expected to be about $4.5 million. 

Funding breakdown

Entity Funding contribution
Federal Grant 
*regional Transportation Improvement Program, 
administered through the Denver Regional Council of Governments
$2 million
Colorado Department of Transportation up to $280,000
Douglas County $250,000
Castle Rock $1.9 million