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News

Drivers: Prepare for US 85 and ramp closures at C-470 over the weekend as part of US 85 widening project

Closures Sept. 25 - Oct. 5 include US 85 at C-470 and County Line Road and C-470 westbound ramps

Posted on September 20, 2024 2024News and EventsTransportation

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If you access westbound C-470 at US 85, please read this update and plan for a week-long closure, along with weekend closures of US 85.

US 85 (Santa Fe Drive) at C-470 will be closed from 8 p.m. Friday, Sept. 27, through 5:30 a.m. Monday, Sept. 30. The westbound off-ramp will close at 7 a.m. Wednesday, Sept. 25 and reopen Monday morning with US 85. The westbound on-ramp closure will continue until 5:30 a.m. Saturday, Oct. 5. Please give yourself extra time or take an alternate route.

These closures allow crews to expedite weather-dependent work, accelerating the overall US 85 Widening Project construction schedule.

Traffic impacts

7 a.m. Wednesday, Sept. 25 – 5:30 a.m. Monday, Sept. 30 – Closure and detour map

NEW: Add a reminder to your calendar. 

8 p.m. Friday, Sept. 27 – 5:30 a.m. Monday, Sept. 30 – Closure and detour map

NEW: Add a reminder to your calendar. 

8 p.m. Friday, Sept. 27 – 5:30 a.m. Saturday, Oct. 5 – Closure and detour map

NEW: Add a reminder to your calendar. 

Wolhust Residents: Access into the Wolhurst Neighborhood will only be accessible from County Line Road. Both northbound US 85 and County Line Road will be accessible from the Wolhurst Neighborhood. There will be no access to or from southbound US 85 over the weekend. View additional details in this document. 

Here are the planned detours over the weekend:

US 85 full closures 

County Line Road to/from southbound US 85 

If weather conditions arise over the weekend, preventing operations from taking place as scheduled, crews will continue the closures throughout the day Monday, Sept. 30.

Please give yourself extra time to navigate expected traffic throughout the closures and pay attention to posted speed limits and signage. Please watch for crews, heavy machinery and trucks entering and exiting the work zone. Heed the speed limit and avoid distracted driving in the work zone.

About the Work
On Wednesday, crews will close the westbound off-ramp to begin roadway removals. Beginning Friday night, crews will close US 85 between County Line Road and the eastbound C-470 ramp intersection along with the westbound C-470 on- and off-ramps to pave the new roadway on the bridge over C-470 and connect the new westbound ramps. A new drainage pipe will be placed below the westbound C-470 on-ramp before being paved, requiring the ramp to be closed through the week.

Extended closures allow crews to expedite paving operations and other weather-dependent construction activities, reducing the overall construction schedule.

The newly widened roadway and reconstructed interchange will alleviate traffic and create safer travel as part of the US 85 Widening Project and corridor improvements being made from Highlands Ranch Parkway to north of C-470 by Douglas County.

Get Updates on the US 85 widening project
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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