Upcoming weekend full closure of Quebec St. westbound on-ramp to C-470 – work scheduled May 17 to 20

May 16, 2019 - Denver Metro Area - Work necessary to enhance connectivity and safety for Centennial Trail users as part of C-470 construction project

DOUGLAS COUNTY –The Colorado Department of Transportation plans to conduct a full weekend closure of the Quebec St. westbound on-ramp to C-470. By doing this work over a full weekend, CDOT will eliminate more than 20 nights of full closures.

Time of closure:

This closure is scheduled from 8:00 p.m., Friday, May 17 through 5:30 a.m., Monday May 20.

Purpose and benefits of work:

This closure is necessary to remove existing asphalt, excavate the existing ramp, place an 18-foot box culvert and rebuild the ramp allowing Centennial Trail users to seamlessly access the C-470 Trail. This underpass will not only enhance connectivity of the trail but provide safe passage for users by eliminating interaction with traffic on Quebec St.

Construction activities are weather dependent and the schedule is subject to change.


If you are traveling on Quebec St. and wanting to take the westbound on-ramp to C-470, you will be able to detour on County Line Rd.  Detour is approx. 3.8 miles. The detour route is clearly marked.


The $276 million C-470 Express Lanes project will increase mobility and user choice along 12.5 miles between I-25 and Wadsworth Boulevard. In the westbound direction, two additional Express Lanes are being built from I-25 to Colorado Boulevard and one additional Express Lane from Colorado Boulevard to Wadsworth. In the eastbound direction, one additional Express Lane is being constructed along the length of the project between I-25 and Wadsworth Boulevard. The project also includes full reconstruction of existing pavement, the addition of auxiliary lanes at selected locations, on- and off-ramp improvements, realignment of substandard curves, widening of existing bridges, replacing the bridges over the South Platte River, the installation of tolling equipment and new C-470 trail underpasses at Colorado and Quebec. When complete, motorists will have the option to use the Express Lanes on C-470 for a faster, more reliable commute in exchange for paying a toll, or drive the general purpose lanes for free.

Remember to slow down for the Cone Zone

The following tips are to help you stay safe while traveling through maintenance and construction work zones.

·        Do not speed in work zones; obey the posted speed limits.

·        Stay Alert! Expect the unexpected.

·        Watch for workers; drive with caution.

·        Don't change lanes unnecessarily.

·        Avoid using mobile devices such as phones while driving in work zones.

·        Turn on headlights so that workers and other drivers can see you.

·        Be especially alert at night while driving in work zones.

·        Expect delays, especially during peak travel times.

·        Allow ample space between you and the car in front of you.

·        Anticipate lane shifts, and merge when directed to do so.

·        Be Patient!

Whole System. Whole Safety  

To heighten safety awareness, CDOT recently announced its Whole System Whole Safety initiative. This project takes a systematic statewide approach to safety combining the benefits of CDOT’s programs that address driving behaviors, our built environment and the organization's operations. The goal is to improve the safety of Colorado’s transportation network by reducing the rate and severity of crashes and improving safety conditions for those traveling by all transportation modes. The program has one simple mission - to get everyone home safely.

About CDOT

CDOT has approximately 3,000 employees located throughout Colorado, and manages more than 23,000 lane miles of highway and 3,429 bridges. CDOT also manages grant partnerships with a range of other agencies, including metropolitan planning organizations, local governments and airports. It also administers Bustang, the state-owned and operated interregional express service. Gov. Jared Polis has charged CDOT to further build on the state’s intermodal mobility options.  


For additional information about this project, call the project information line at 303-347-0507, email the team at [email protected], or visit the project website and sign up for updates at www.codot.gov/projects/C470ExpressLanes. For updates on travel conditions, visit CoTrip.org, sign up for GovDelivery, or call 511. Updates are also available via Twitter @coloradodot and CDOT’s Facebook page at Facebook.com/coloradodot.