Plum Creek Parkway

As the Town of Castle Rock prepares for the future, planning safe and smooth access for the traveling public is a priority. 

For drivers on the south side of Castle Rock, the Town is planning a two-phase project to widen Plum Creek Parkway between Gilbert Street on the west and Ridge Road on the east. In addition, the intersection of Plum Creek Parkway and Gilbert Street will be converted from the temporary signal it is now to a multi-lane roundabout. These improvements are expected to improve access to Plum Creek Parkway’s interchange with I- 25 and increase bicycle access with new bike lanes.

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The Town on May 22, 2018 hosted an open house to gather feedback before design began.Thank you for your feedback! The Town is now working to incorporate your thoughts into the design.

Read FAQs from the May 22 open house.

Learn about the project


Council approved a design contract with engineering firm Kimley Horn & Associates at its April 4, 2018 meeting.

Watch the presentation
View the PowerPoint

Design of both the widening and the roundabout will occur in 2018. Open houses to gather community feedback will be scheduled as design progresses. Stay tuned for details!

Timeline and phasing

Construction on the roundabout and phase one of the widening ­ – between Gilbert Street and Eaton Circle – 
would occur in 2019 as part of the Town’s annual Pavement Maintenance Program. The second phase of construction is tentatively set for 2022, depending on available funding.


Design for this project is budgeted at $480,515 and is funded by the Town’s Transportation Capital Fund, which includes growth-related revenues from impact fees and building use tax.

These improvements were defined in the Town’s Transportation Master Plan and reducing congestion in the area has been a priority for Town Council. Learn more about that plan and read the document at