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By order of Sheriff Darren Weekly, Stage 1 Fire Restrictions are in place for unincorporated areas of Douglas County. Ordinance No. O-012-004 restricts open fires, open burning and the use of fireworks in the unincorporated areas of Douglas County.

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Public Works

County Line Road Widening and Reconstruction (University to Broadway)

Under Construction

Project Manager

Ben Pierce
[email protected] (303) 660-7490

Contractor

JHL Constructors
[email protected] (720) 795-9622 x2523

Partners

  • City of Centennial
  • City of Littleton
  • DRCOG

Project Update

Updated May 27, 2026:

Mobile Flagging Operations for Pothole Repair – May 28

On Thursday, May 28, from 9 a.m. to 3 p.m., watch for mobile lane closures and flagging operations as crews repair potholes corridor-wide on County Line Road between University Boulevard and Broadway. Expect minor delays, watch for flaggers on foot and proceed through the area with extra caution.

Work continues on noise walls, drainage systems, horizontal concrete work and paving. You may notice traffic shifts and intermittent single lane traffic as crews safely move into new construction phases. Please follow posted speeds and do not drive distracted when driving through the work zone. Watch for flaggers on foot and proceed through the construction area with caution.

We appreciate your patience as we build a safer County Line Road for everyone!

Business Access Update

Crews are continuing construction on County Line Road between Target and University Boulevard. As crews continue construction, access to the Plaza at Highlands Ranch will be closed between Target and University Boulevard starting on Monday, April 20, and lasting for three weeks. Access to the Plaza at Highlands Ranch will be maintained using the business access points at Target or Circle K.

Pedestrian Access at Phillips Avenue

Sidewalk improvement work continues along Phillips Avenue near the Wilmore Nursery. A small portion of the sidewalks on the east side of Phillips Avenue between County Line Road and E. Phillips Court remains closed for the construction of new sidewalks. Pedestrians should plan to detour by using the sidewalks on the west side of Phillips Avenue. Cones and signage are in the area to keep pedestrians safe and out of the work zone.

Safety Message

This is an active construction zone. Please drive posted speeds, watch for crews and equipment, and avoid distractions. If you’re traveling through the area, plan ahead, allow extra time and check your navigation app for real-time traffic updates.

We appreciate your patience and cooperation as improvements to County Line Road continue.

Total Project Duration: About 24 months.

Description

Since 2019, Douglas County has worked with partners to advance the final design, acquire right-of-way and prepare utility relocation design for a major water line located within the project area. Douglas County is partnering with the Denver Regional Council of Governments, the City of Littleton and the City of Centennial to fund the project. The total construction cost is estimated to be approximately $30 million for budget planning purposes which includes contingency funds, construction costs and consultant engineering costs to provide project management, inspections, and material testing for the project.

This project will include an additional travel lane in each direction, a new traffic signal at the Clarkson Street/County Line Road intersection, a mill and overlay for the portion of the road within the City of Littleton located between Phillips Avenue and Broadway, as well as adding sidewalks. Construction started in September 2025.

Project Fact Sheet

Schedule

Construction hours are Monday through Friday, 7:00 a.m. to 7:00 p.m. Saturday work is possible if approved by the Douglas County Engineer.

Project Photos