On the night of Monday, May 18, the traffic configuration on southbound E-470 from Coal Creek Bridge to Quincy Ave. will be switched to permanent alignment. Motorists can expect the lanes to be moved west, off of the shoulder and onto the newly-expanded bridge. Please adhere to the sign posted speed limits and drive with caution in this area. For up-to-date closure information, stay tuned on our E-470 Facebook or Twitter page.


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.


I-70 and 19th Ave Bridge Superstructure

In April, crews continued working on the superstructure of the E-470 bridges over I-70 and 19th Ave. This work included preparing for the deck placement and bridge wall construction to accommodate the roadway expansion.

E-470 over the Southbound on-ramp from I-70 and Colfax Bridges

All four decks have now been poured on the E-470 bridges over the southbound on ramp from I-70 and Colfax Ave. Crews are beginning work on the approach slabs and railings for the bridges. 

Coal Creek Bridge Backfill

Crews continued work on the backfill for the approach to Coal Creek Bridge, completing the approach slabs and railing. Now that the bridge widening is almost ready for traffic, the southbound side of the bridge will be aligned with the mainline roadway paving.

E-470 over the Southbound off-ramp to I-70

This past month, construction teams worked to place 12 girders on the E-470 bridge over the southbound off-ramp to I-70, completing the girder work for this section of the roadway expansion. With the girders now in place, crews will begin deck formwork in the near future.

High Plains Trail Work

Jewell Ave was closed to thru-traffic at the E-470 ramp for a few days in April to allow for the installation of the pedestrian tunnel underpass for the High Plains Trail. Now that the tunnel has been installed, Jewell has been reopened and crews are looking next to start work on the foundations of the pedestrian trail bridge crossing Tollgate Creek just north of Quincy Ave. 


Asphalt Paving 6th Parkway to SH30

With unexpected weather conditions, crews have been unable to start paving the third lane expansion of E-470 from 6th Parkway to State Highway 30. In preparation for this work, subgrade has been set along this stretch of the roadway, and now with improving weather crews are looking to start asphalt paving in May. 

All future work is weather dependent. 

Project Metrics  

Earthwork is now 90% complete, with 700,000 cubic yards of earth placed for the third lane installation of E-470.  
47 girders have been installed on the E-470 bridges, each one close to 130 feet long and weighing around 130,000 pounds.

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

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Call the project hotline at 303-536-5969