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Oct 23

JC-73 Corridor Study (Buffalo Park Road to Plettner Lane) Evergreen, CO 80439

Posted on October 23, 2020 at 8:47 AM by Lindsay Townsend

Project Overview:
Jefferson County Road 73 (or JC-73) is the primary travel route for residents of Evergreen between their homes and destinations along State Highway 74 with ultimate connections to I-70 and C-470. Access to US-285 at Conifer is also available along JC-73 to the south of the project corridor. This roadway is a link for hundreds of thousands of visitors each year. In the event of an emergency, it is one of the primary evacuation routes for the foothill residents of Jefferson County. 

JC-73 has long been identified as a road where improvements are needed, especially bike and pedestrian infrastructure, shoulders, and access to properties, businesses, and downtown Evergreen. 

We are working to identify conceptual design alternatives for an approximately ½ mile segment of JC-73 between Buffalo Park Road and Plettner Lane. This segment is the last of ongoing bike and safety improvements that have been completed or scheduled for JC-73. However, it is also the most challenging segment due to physical constraints. 

Transportation Improvement Program (TIP) funding has been secured to construct safety and operational improvements including bike lanes / shoulders and pedestrian facilities. The roadway will also be reconstructed, including drainage improvements and bridge replacement.
Link to JC-73 Project Area Map
Link to JC-73 Project Area Map

Preferred Alternative Summary:
The Preferred Corridor and Intersection Alternative was selected based on the compilation of screening criteria shown in the public meeting presentation, public feedback, environmental and geological impacts, available funding, a benefit cost analysis comparing a signalized and roundabout intersection and traffic data. 

To aid in the decision-making process, a community questionnaire was administered to better understand the community concerns, preferences, and priorities for the project area. The public feedback gathered through the comment form indicated the public favored the three-lane corridor concept but had an even split relating to the traffic signal versus roundabout intersection design at Buffalo Park Road and JC-73. 

Based on the screening criteria and responses from the community, the recommended preferred alternative advancing to preliminary design is the three-lane corridor concept and an improved signalized intersection at Buffalo Park Road and JC-73.

Project Schedule:

In March 2020, a consultant team was brought on board to assist in development of the conceptual designs. Below, is the initial project schedule; the project team was delayed approximately one month due to COVID-19.

Link to see larger project timeline image.

Stakeholder Engagement Process: 
The public involvement and feedback are a vital part of any project and was used to help inform the Preferred Alternative decision.  An additional public meeting will be scheduled during the preliminary design phase to engage with the public and gather additional feedback on the more advanced design. For additional information regarding the conceptual design and screening process, please review the project video (video and pdf version available).

The project video highlights the existing features and traffic conditions along the project corridor, the proposed alternatives, and the intersection alternatives for Buffalo Park Road and JC-73. 

The comment form closed at 11:00 p.m. on Monday, August 3, 2020. You may still view the project video or PDF version.

Project Video
Project Video
(PDF Version) (7.72 MB)
See Existing Flyover Video

Project Documents:

For Questions:

Your feedback is valuable in the decision-making process. A public meeting will be held in early 2021 for the public to review and comment on the Preliminary Design. However, if there are immediate concerns, please email Brad Bauer.

Thank you for your interest in this project!