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Nighttime full closures of C-470 and US 85 interchange for bridge widening

Expect detours on C-470 and US 85 in Highlands Ranch overnight Wednesday, May 3, and Thursday, May 4

Posted on April 28, 2023 2023News and Events


Give yourself extra time to drive C-470 or US 85 (Santa Fe Drive) in Highlands Ranch overnight this week.

Several detours will be in place around the interchange of C-470 and US 85 nightly from 8 p.m. to 5:30 a.m. Wednesday, May 3, and Thursday, May 4.

These closures are necessary for driver and worker safety during overhead bridge work. During these closures, crews will use a crane to lift and place 20 bridge beams, called girders, to form the western portion of the new US 85 bridge. The work is a key milestone in the project to widen US 85 from Highlands Ranch Parkway to just north of C-470.

Please take an alternate route or plan extra time. Pay close attention to posted speed limits and signage. Watch for crews.

Here are the planned detours:

Through traffic on eastbound and westbound C-470

Eastbound C-470 traffic going north or south on US 85

Westbound C-470 traffic going north or south on US 85

Northbound US 85 traffic

Southbound US 85 traffic

If weather conditions do not allow this work to take place as originally scheduled, crews will conduct this work at a later date.

Please watch for crews, heed the speed limit, and avoid distracted driving in the work zone.

Get Updates on the US 85 widening project

In partnership with the Colorado Department of Transportation, Denver Regional Council of Governments, the Federal Highway Administration, Highlands Ranch Metro District, and Chatfield Basin developers, Douglas County is improving safety and mobility along US 85 from Highlands Ranch Parkway to just north of C-470.

Stay updated by signing up for emails – select “US 85 Construction.”

For more information about the upcoming work and to stay updated on construction impacts, please visit our website, douglas.co.us/us-85-construction.

Other Roadwork

Interested in knowing what’s happening on roads throughout Douglas County? Sign up for Douglas County’s Cone Zone email notifications. For statewide road conditions, visit cotrip.org.



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