November, 2019

Weekend Traffic Advisory 11-8-19


Great progress is being made on E-470 Road Widening Project from Quincy Avenue to I-70! In October, the following project milestones were completed.

- All 12 girders were set on the E-470 northbound Coal Creek bridge. This marks the second set of girders installed as part of the 14 bridges scheduled to be widened as part of the project.

- The first paving also took place on the project from SH30 to Quincy along southbound E-470. Paving activities will be ongoing as crews work to open a third lane on southbound E-470 from Jewell to Quincy Avenue by the end of 2019.

- Critical toll system work was completed at Toll Plaza B for southbound E-470.

Project Facts 

Each girder weighs approximately 130,000 pounds and is close to 130 feet long.

Approximately 22 thousand tons of asphalt have been placed on the project to date.

Upcoming November Construction Activities

Please be advised all work is schedule and weather dependent. The following activities are planned for November on the E-470 Road Widening Project.

Girder Installation

Now that the girders have been set on the Coal Creek bridges, crews have begun working on the bridge decks. The next girder erections are planned for the Colfax and Ramp B bridges. All substructure work will be complete ahead of early December girders placement for these bridges in[SM1]  November. Girder installations are planned to minimize impacts to the traveling public and will take place during nighttime hours or weekends. One lane of travel along E-470 mainline will remain open at all times; however, traffic will be paced while the large girders are removed from the truck by a crane and placed on the bridge structure. Exact dates and times will be advertised via our message board and social media channels. Traffic control will be on-site for the safety of the traveling public.  

I-70 Bridge Activities

East and West of E-470, crews will begin re-striping the I-70 work zone for approximately .25 miles under the E-470 Bridges. This work is necessary to support the upcoming bridge widenings and associated I-70 median work. Motorists should expect single lane closures in this area from 6 p.m. to 6 a.m. along I-70, each night in early November.

Coal Creek Bridge Deck Pour

In late November crews will pour the concrete deck on southbound E-470 at the southbound Coal Creek bridge. This will facilitate construction of southbound traffic into a third lane by the end of 2020.

Upcoming Ramp Activities

Motorists should expect minimal impacts at the E-470 on and off-ramps to Quincy Avenue this month. Crews will be creating a ramp detour and reducing the size of the existing ramp lanes to facilitate construction of the third lane of southbound E-470 this year. Please watch for additional activities in this area. 

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E-470 Road Widening Project Update - August 22, 2019
E-470 Road Widening Project Update - September 27, 2019


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. Project elements include:

  • Adding a third lane in each direction on E-470 between Quincy Avenue and I-70 (8 miles), and from Ramp B (from I-70 to southbound E-470) to the Smith Road/UPRR crossing.
  • Widening 14 northbound and southbound bridge structures at 7 bridge locations at (1) Coal Creek, (2) Ramp B, (3) Colfax Avenue, (4) I-70, (5) 19th Avenue, (6) Ramp E (from southbound E-470 to I-70), and (7) Smith Road/UPRR. 
Ramp Relocation
  • Relocating the northbound E-470 on- and off-ramps at Quincy Avenue.
Trail Extension
  • Extending High Plains Trail from Quincy Avenue to the new Stephen D. Hogan Parkway (6 miles).
Construction Improvement
  • Grading and drainage for a future fourth lane in each direction on E-470 from Quincy Avenue to Ramp B, and improving shoulders.
  • Building new wildlife deer fencing and game ramps.
  • Adding new overlay to existing pavement.

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.

For project information and construction updates:
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To contact the project team:
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Call the project hotline at 303-536-5969