January, 2020

Weekend Traffic Advisory 1.9.20

This advisory is for January 9 and includes information about a northbound  left lane closure from I-70 to Smith Road on January 10-12 from 7 a.m. to 5 p.m. Read the advisory for information on other weekend closures.


As a reminder for motorists, please drive at the posted speed limits in the construction zone. Your compliance and undivided attention to cones, work trucks, barriers and other construction resources is imperative to your safety, the safety of workers and your fellow drivers. We want to make sure your journey is as safe as ever during construction.


Third Lane Opening (Southbound Jewell to Quincy Ave)

The first section of the Road Widening Project has opened, a new third lane on the roadway between southbound Jewell Avenue and Quincy Avenue. This is the first major milestone for the project aimed at widening the eight-mile stretch of E-470 between Quincy Avenue to north of I-70. For more information, click here

Coal Creek Bridge Work and Deck Pours
Crews have finished setting girders on the northbound and southbound sides of the Coal Creek Bridge. Later this month, the southbound asphalt deck will be poured. The northbound deck is planned to be poured by early January, weather depending.

Bridge Girder Setting
Work will continue on the E-470 bridges over Ramp B and Colfax Avenue, with girders being set by the end of the year. Motorists can expect delays and detoured traffic alignments.

I-70 and 19th Street Bridge Foundation Work 
Substructure work is underway on the E-470 bridges over I-70 and 19th Street. Crews are working on the deep foundation work with pile driving and caisson installation. Some delays should be anticipated as flaggers guide traffic through lane restrictions, with one lane of traffic remaining open at all times.

Ramp E Asphalt Paving Begins
Temporary asphalt pavement will be laid along each side of Ramp E in December to allow for upcoming bridge widening construction. There will be single lane closures to accommodate this work and those travelling through the area should expect minimal delays.

By the numbers:
  • Approximately 15-miles of barrier has been set on southbound E-470 to protect the construction zone and create a safe space for road widening activities, five miles of which have been reset where construction has finished. 
  • To date, approximately 300,000 cubic yards of dirt have been moved to prepare for the third lane installation on E-470.
  • 35 girders have been installed on the E-470 bridges, each one close to 130 feet long and weighing around 130,000 pounds.

  • 40,000 tons of asphalt have been placed to surface the third lane widenings along E-470.

Click here to sign up for project and construction updates, or email roadwidening@e-470.com to contact the project team. 


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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Follow us on Twitter @E470 and @E470RoadUpdates

To contact the project team:
Email us at RoadWidening@e-470.com
Call the project hotline at 303-536-5969