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The original item was published from 1/14/2022 3:09:58 PM to 1/14/2022 3:13:38 PM.

News and Announcements

News and Announcements

Posted on: January 14, 2022

[ARCHIVED] Crystal Valley Interchange project open house

Crystal Valley Interchange Project open house

Construction of a new interchange at Interstate 25 and Crystal Valley Parkway is a top transportation priority for the Town. The project will improve traffic safety and mobility in the surrounding community and provide a key regional transportation link from I-25 to southern Castle Rock and Douglas County.

The interchange includes construction of a bridge over I-25, northbound and southbound on- and off-ramps, a bridge over the BNSF railroad tracks, relocation of a segment of East Frontage Road and a connection to West Frontage Road, which will be relocated from Tomah Road to the new interchange as a separate project by the Town and Douglas County. 

At this time, the entire project cost ranges from $75 to $80 million. The Town received a $5.4 million BUILD grant from the U.S. Department of Transportation and is committed to setting aside $20 million in resources for the project. Other funding sources are being determined from both the public and private sectors. Refinements to the cost will occur as the design is finalized and as a contractor is added to the design team.

Learn more about the interchange project at an open house from 4 to 6 p.m. on Thursday, Jan. 27, at Castle Rock Fire Station 152, 485 Crystal Valley Parkway. Staff from Public Works, Douglas County and the Colorado Department of Transportation will be on hand to provide more information on the project background and to hear your input on the proposed trails, sidewalks and a potential Park-n-Ride. The team will use this feedback in the project’s design. 

Visit for more information and an overview of the improvement options. And, take a few minutes to provide your feedback on the Crystal Valley Interchange project.

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