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Design and pedestrian concerns surface as Happy Canyon interchange, CPP works advance
Summary
Staff outlined the diverging-diamond Happy Canyon interchange due in 2026–2028, road grinding and grinding strategy for Castle Pines Parkway, and council raised questions about pedestrian and bike crossings where signals and crosswalks do not align. County funding of roughly $20 million was cited for the interchange.
Staff walked council through the Happy Canyon interchange design and the wider road solutions plan that will run into 2028; they said county funding is covering roughly half of the interchange, about $20 million. Mr. Penny noted the project will use a diverging diamond design and staff are coordinating with CDOT on signal and landscaping decisions.
Council members pressed staff about pedestrian and bicyclist safety at the interchange and crossings, noting that some crosswalk locations and signals are not co-located. One council member summarized the design concern succinctly: "The traffic signal is not exactly where the crosswalk is," highlighting the tension between required highway free-flow ramp geometry and protected pedestrian crossings. Staff said the diverging-diamond layout is a CDOT requirement but acknowledged there are design details to refine before construction.
