All County offices will be closed Monday, May 27, in observance of the Memorial Day Holiday. Offices will reopen Tuesday, May 28, for normal business. Join us in honoring those who gave all. 



Help Me With...

Select from list
My Residential Property
My Driver's License or Vehicle Registration
Requesting Assistance
Health Department


Select from list
My Property Valuation
Understanding My Valuation
Paying My Property Tax
Neighborhood Sales
Building Permits
Vehicle Registration - New Stickers
Vehicle Registration - New Vehicle
Drivers License - New or Renew
New Resident Vehicle Registration
Adult Protection
Child Welfare
Child Support
Child Care
Financial Assistance
Medical Assistance
Food Assistance
Register to Vote / Update Voter Registration
Upcoming Election Information
Ballot Drop Box Locations
Voter Service and Polling Centers
Birth/Death Records
Restaurant Inspections
Community Health
Child Care Center Inspections
Septic System Inspections
Emergency Preparedness & Response
Disease Surveillance
Mental and Behavioral Health Education
Community Health and Clinical Services
Women, Infants and Children


× Close


Major construction starts Oct. 3 on US 85 from Highlands Ranch Parkway to C-470

Drivers should expect delays, sign up for email updates

Posted on September 29, 2022 2022News and EventsTransportation


If you are one of the thousands of daily drivers on US 85 (South Santa Fe Drive) in Highlands Ranch, please give yourself extra time to navigate upcoming construction.

On Monday, Oct. 3, Douglas County and the Colorado Department of Transportation will begin the highly anticipated work to widen and reconstruct 2.5 miles of US 85 from Highlands Ranch Parkway to just north of C-470.

Construction activities will require reduced speeds, lane closures, turn-lane closures, and various full closures.

Drivers should expect to see workers and heavy equipment during the day between 7 a.m. and 7 p.m. with daytime lane closures between 9 a.m. and 3 p.m. weekdays. Overnight lane closures on US 85 and C-470 are expected from 7 p.m. to 5:30 a.m. weeknights.

Please watch for crews, slow down, and avoid distracted driving in the work zone.

Get Updates

Stay updated by signing up for emails – select “US 85 Construction.” For updated travel information, visit

Multimodal Improvements

In addition to widening US 85 from four to six lanes, the project includes the replacement and widening of the existing bridge that carries US 85 over C-470.  Major US 85 intersection improvements will occur at Highlands Ranch Parkway, Town Center Drive, Blakeland Drive, the C-470 interchange ramps, and at County Line Road.

Multimodal improvements include bus stop enhancements, a new shared-use path for bicyclists and pedestrians on the east side of US 85, a below-grade crossing for the C-470 Trail at US 85, a below-grade crossing for the High Line Canal Trail at US 85, and a new pedestrian link from the Wolhurst community to the C-470 Trail.

The project also includes the addition of continuous auxiliary lanes, new asphalt paving, relocation of utilities, raised medians, new curb and gutter, and a new closed storm sewer system with water quality ponds.

Business Access Changes

To increase safety along the vital US 85 Corridor, access to businesses and some streets along US 85 will change to right-in, right-out only. No left turns will be permitted, and traffic will use signalized intersections at Highlands Ranch Parkway, Town Center Drive and Blakeland Drive for all business access.

About the Project

This project is Douglas County’s largest transportation project to date. Project partners include CDOT, the Denver Regional Council of Governments (DRCOG), the Federal Highway Administration, Highlands Ranch Metro District, and Chatfield Basin Developers. Construction is expected to be completed in 2025.

For more information about the upcoming work and to stay up to date on construction impacts, please visit our website,

A safe and accessible multimodal transportation network is one of the Board of County Commissioner’s six core priorities. Read more about the County’s transportation initiatives online.

Your County. Your News. Get it first.

Be among the first to receive news as it happens. Subscribe to our online news push, and select your specific news focus and delivery preferences. Visit the Live Town Hall page and register for Town Hall notifications to ensure you are contacted to participate in future community conversations about topics important to you. Both services are free, and you can unsubscribe at any time. And don’t forget to follow Douglas County on Nextdoor, Facebook, Twitter, Instagram, LinkedIn and YouTube.

Sign Up Now!