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Public Works

US 85 Widening from Highlands Ranch Parkway to C-470

Roadway

Budget

Total Approximate Construction Cost = $108 Million

Project Manager

Douglas County / CDOT / Kraemer North America
[email protected]

719-695-0052

Contractor

Kraemer North America
[email protected]

719-695-0052

Partners

  • Douglas County
  • CDOT
  • Chatfield Basin Developers (Sterling Ranch and Solstice Development)
  • Federal Highway Administration (FHWA)
  • Denver Regional Council of Governments (DRCOG)
  • Highlands Ranch Metro District

Project Update

Subscribe and Receive Updates.

Updated Jan. 19, 2023 – Traffic pattern is changing – Please pay extra attention along US 85 between C-470 and Blakeland Drive during the week of Jan. 22. Due to weather conditions this past week, traffic will now shift overnight on Wednesday, Jan. 25, and Thursday, Jan. 26. The shift gives crews room to safely continue wall construction and roadway widening. Crews will also focus on underground utility work and begin preparing for bridge construction.

As always, we ask you to please continue to pay extra attention and follow all posted signage through the construction zone. Expect increased enforcement to ensure the safety of crews and motorists. Pedestrians and bicyclists are not permitted in the work zone – please use signed and signaled intersections to cross US 85.

See the “Schedule” section below for more detailed information on traffic impacts.

Description

This project will improve safety, mobility, and traffic operations by widening (from four to six lanes) and reconstructing a segment of US 85 (South Santa Fe Drive) from Highlands Ranch Parkway, extending north of  the C-470 Interchange to Dad Clark Gulch (which is located approximately 1,200 feet north of County Line Road). 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. The project also includes the replacement and widening of the existing bridge that carries US 85 over C-470.

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.

Timeline: Fall 2022 to Fall 2025

Partial Continuous Flow Intersection (CFI) will be installed for the following traffic movements:

  • Southbound US 85 to Eastbound Highlands Ranch Parkway
  • Southbound US 85 to Eastbound Town Center Drive
  • Northbound US 85 to Westbound C-470

View a map of US 85 Interchange at the above 3 listed intersections.

For background information prior to construction, visit US85DouglasCounty.com

Other projects along US 85 in Douglas County

Schedule

Drivers should expect to see workers and heavy equipment during the day between 7 a.m. and 7 p.m. Please watch for crews, slow down, and avoid distracted driving in the work zone.

Jan. 22 – Jan. 28:

Daytime impacts:

  • Single lane closures on northbound and southbound US 85 from 9 a.m. to 3 p.m. daily Monday, Jan. 23, through Saturday, Jan. 28, throughout the corridor.

Nighttime impacts:

  • Single lane closures on northbound and southbound US 85 between C-470 and Blakeland Drive from 9 p.m. to 5:30 a.m. on Wednesday, Jan. 25, and Thursday, Jan. 26.

Trail Closures
Three trail closures will stay in place into 2024 while crews install new underpasses to allow pedestrians and bicyclists to safely pass under US 85.

Business Access Changes has permanently changed to right-in, right-out only at private driveways and un-signalized intersections between Highlands Ranch Parkway and C-470. Left turns at Norwood Drive, Carder Court, Brandon Drive, Grace Presbyterian Church, and Spring Gulch Equestrian Area are no longer allowed. View business access changes.

 

Project Photos