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Public Works

County Line Road Operational Improvements (I-25 east side to Inverness)



Estimated Project Cost = $10 Million

Project Manager

Art Griffith
[email protected]



  • Arapahoe County
  • Inverness Metropolitan Improvement District (IMID)
  • Southeast Public Improvement Metropolitan Distsrict (SPIMD)

Project Update

May 25, 2022

The new design alternative must:

  • Be compatible with Arapahoe County’s Inverness Drive West Bike and Pedestrian Facilities Project which is located immediately to the north of our project limits
  • Minimize construction impacts as well as utility relocations; and requires installing new traffic signals at the existing closely spaced intersections.
  • Project limits will likely be expanded to include a mill and overlay of the existing pavement on County Line Road between the southbound I-25 off-ramp and the South Valley Highway / Inverness Way South / Inverness Parkway Intersection.
  • Improve traffic operations and cost closer to $5 million.

To advance construction in 2024, in 2022/2023, the parties will need to agree on a revised plan, finalize a stakeholder funding plan, prepare revised construction documents, acquire additional right-of-way, and relocate impacted utilities.



The project involves making multi-modal, safety, and traffic operational improvements at the two existing closely spaced intersections and improving the westbound County Line Road to the northbound I-25 on-ramp entrance. Also, as part of this project, new traffic signals will be installed at both existing intersections, and the project includes a mill and overlay of the existing pavement on County Line Road between the I-25 southbound off-ramp and the Inverness Parkway / Inverness Way South intersection.  Click here to view a design drawing of County Line Road (east of Inverness).  Since this design is significantly more expensive than originally anticipated, representatives from the Inverness Metro Improvement District, Arapahoe County and Douglas County continue to investigate finding more affordable alternatives.

This project is estimated to cost $10 million and constructed no sooner than 2024.


Separate from the above-mentioned project, the Inverness Water & Sanitation District (IWSD) is constructing a new sewer line spring/summer of 2022; and their project will require a full road closure for segments of Inverness Parkway and Inverness Drive West.  The contractor will utilize signed detour routes during the road closures. The water district has project information on its website.  For more project specific details please contact the District’s Project Manager Scott Barnett,   [email protected]

Project Photos