Road Widening Project

Information and Construction Updates

E-470 began construction in summer 2019 to add a third lane to the road in each direction between Quincy Ave. and I-70. E-470’s 2014 full investment grade Traffic and Revenue Study indicated this eight-mile section of the road would need to be widened to maintain the level of service that our customers have come to expect and value. This current project is a continuation of the first phase of widening between Parker Rd. and Quincy Ave. completed in 2017. Together, these projects allow E-470 to ensure a safe and reliable commute for our customers, improving mobility and accommodating projected growth to maintain a free-flow of traffic in the coming years.

November 2020 Project Update

E-470 Bridges
In October, crews completed the final bridge deck pours on the E-470 bridges over Smith Rd. and the Union Pacific Railroad. Next, crews will work on the final painting and structure work for these bridges. Final finishing work was completed for all other E-470 bridges and ramps in October as part of this phase of the road widening project.

Relocated E-470 Ramps
Work for the relocated Quincy Ave. ramps was completed in October, with final grading, painting and structure work taking place. The relocated ramps are expected to open in early November once a new traffic signal is installed at the Gun Club Rd. intersection in Arapahoe County.

Third Lane Expansion
In October, permanent striping was completed for the new lane alignments and all three lanes were opened to traffic on October 4.  Ongoing work requiring daily lane closures is continuing as crews install rumble strips and clear off remaining safety and construction equipment from the roadway.

High Plains Trail
In October, work began on the pedestrian trail crossing at Coal Creek with crews installing subgrade and foundations. Crews also continued to work on the barrier walls separating vehicle traffic from the trail at SH30 and Hampden along southbound E-470. 

Click here to sign up for project and construction updates, or email the project team. Note that all work is weather dependent. For up-to-date closure information, visit E-470 on Facebook and Twitter.

About the Project

E-470 begins construction this summer 2019 to add a third lane to the road in each direction between Quincy Avenue and I-70. E-470’s 2014 full investment grade Traffic and Revenue Study indicated this eight-mile section of the road would need to be widened to maintain the level of service that our customers have come to expect and value. This current project is a continuation of the first phase of widening completed in 2017 between Parker Road and Quincy Avenue. Together, these projects allow E-470 to ensure a safe and reliable commute for our customers, improving mobility and accommodating projected growth to maintain a free-flow of traffic in the coming years.

The E-470 Road Widening Project costs approximately $99 million and is funded through toll revenue; there are no local, state or federal funds being used. The northbound E-470 ramp relocations at Quincy Avenue are jointly funded by Arapahoe County, the South Aurora Regional Improvement Authority and E-470. Construction is scheduled to be complete by the end of 2020 (all work is weather dependent). Project elements include:

Widening
As part of the project, E-470 is adding a third lane in each direction approximately eight miles between Quincy Ave. and I-70. Also included is the widening of 14 northbound and southbound bridge substructures at seven bridge locations (Coal Creek; I-70 Ramp B; Colfax Ave.; I-70; 19th Ave.; I-70 Ramp E; and Smith Rd/UPPR).

Ramp Relocation
The northbound on and off ramps at Quincy Ave. will be relocated as part of the project.

Trail Extension
This project includes a six-mile extension of the High Plains Trail from Quincy Ave. to Stephen D. Hogan Pkwy.

Construction Improvement
In addition to the widening, ramp relocation and trail extension, several other improvements are part of the project. This includes grading and drainage for a future fourth lane in each direction and improved shoulders. There will also be new deer fence installed and the addition of new overlay to existing pavement.

Project Documents
Project FAQs
Project Fact Sheet
Project Schedule
Overall Project Map
Typical Road Section Layout
Typical Road Work Zone Layout
High Plains Trail Fact Sheet
Pedestrian Bridge North of Quincy Ave.
Pedestrian Underpass Jewell Ave.
Quincy Northbound Ramp Relocation

COVID-19
E-470 is committed to following guidance set by the CDC and CDPHE in helping to slow and prevent the spread of COVID-19. At this time, the road widening project taking place on E-470 from Quincy Avenue to I-70 is continuing, with strict safety measures to protect construction teams and the public.

As part of these measures, a dedicated task force has been set up to ensure project teams are adhering to the latest guidance set by public health officials. Any previously-scheduled indoor meetings have been cancelled or are now being held virtually. Crews are practicing social distancing in the course of their work and all small group meetings taking place outside are being held to maintain social distancing.

E-470 and its sub-contractors will continue to follow this guidance and are ready to adjust to any new safety measures.

Contact Us

Email us for project information and construction updates. Or call our project hotline at (303) 536-5969.

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Related Information

Quincy Ave./Gun Club Road Intersection Improvements

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Story Map of Area Projects

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