September 9, 2019

Upcoming Lane Closures

Motorists can expect single lane closures on northbound and southbound E-470 to complete the barrier installation which is necessary to create a safe work zone while protecting the traveling public from construction activities.

Daytime single lane closures: Monday-Friday, 9 a.m. - 3 p.m.

Nighttime single lane closures: Monday-Friday, 7 p.m. - 6 a.m.

Please be advised the speed limit has been reduced in the construction zone. This speed reduction is being monitored and enforced by the Colorado State Patrol.

Earthmoving Activities

Scrapers continue earthwork activities on southbound E-470 between Jewell and SH 30. Excavation will prepare the roadway for southbound asphalt paving starting near Jewell Avenue the week of September 23. To date, approximately 150,000 cubic yards of dirt have been moved on the project. Watch for trucks entering and exiting the construction work zone.

Bridge Work Begins

A total of 14 bridges will be widened as part of the project. With the addition of a lane in each direction the existing bridges must be expanded to accommodate the new lanes. Pile driving, the deep foundation work, kicked off on the Coal Creek bridge just south of 6th Parkway this week. Following the pile driving, construction of the bridge approach slabs will begin. Watch for large equipment and reduced speeds in this area.

Other Construction Activities

• Temporary lighting is being installed behind the barrier to replace the existing light structures duringconstruction at multiple interchange ramps. Upon completion permanent lighting will be replaced.

• Guard rail removal continues behind the project barriers.

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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. 
  • Relocating the northbound E-470 on- and off-ramps at Quincy Avenue.
  • Extending High Plains Trail from Quincy Avenue to the new Stephen D. Hogan Parkway (6 miles).
  • 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.


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To contact the project team:
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Call the project hotline at 303-536-5969