February, 2020

Upcoming Road Closures: The following closures will occur from February 21 to Februrary 27 on 19th Ave. and I-70. The closures will take place at night, and will facilitate the expansion of E-470 bridges over 19th Ave. and I-70. 

  • 19th Avenue: On Friday, February 21 and Saturday, February 22, from 7 p.m. to 5 a.m. each night, 19th Avenue will be closed at the Gun Club Road entrance. A detour will route vehicles onto 19th Avenue via Smith Road. Click here for a map of the detour.
  • Eastbound I-70: On Monday, February 24 and Tuesday, February 25, from 8 p.m. to 6 a.m. each night, eastbound I-70 will be closed at the E-470 interchange. A detour will bring the travelling public off I-70 via a temporary off-ramp onto Gun Club Road, where they may re-enter I-70 past the E-470 interchange. Click here for a map of the detour.
  • Westbound I-70: On Wednesday, February 26 and Thursday, February 27, from 8 p.m. to at 6 a.m. each night, westbound I-70 will be closed at the E-470 interchange. A detour will route vehicles onto southbound E-470 to 6th Avenue, where they will enter northbound E-470 to link back up to westbound I-70. Tolls will be waived on E-470 for those using this detour. Click here for a map of the detour.


Bridge Work

Substructure work is continuing on E-470 bridges over I-70 and 19th Street. Crews are working on the foundations of these bridges, installing abutments and piers to support the new lanes being added. Some delays should be anticipated as flaggers guide traffic through lane restrictions, with one lane of traffic remaining open at all times. 

Work is also continuing on the Murphy Creek and Colfax bridges. Part of the Murphy Creek bridge foundation was completed this month, and work is underway on the expanded deck of the Colfax Bridge. Crews have finished pouring the southbound asphalt deck on the Coal Creek Bridge and are looking to pour the northbound deck this month. The continued work on this bridge may cause delays as traffic is routed through single lane closures. 

Foundation Work on Southbound E-470 off-ramp to I-70

Earthwork continues in the areas of the southbound E-470 off-ramp to I-70 to allow for upcoming foundation work in the month ahead. Expect truck traffic entering along the ramp and use caution when driving in the work zones. Next month, safety barriers will be erected to allow crews to perform bridge work and traffic will be shifted to one side of the ramp.

Single Lane Closures from I-70 on-ramp to E. Smith Road

To facilitate the construction taking place on the various E-470 bridges between the I-70 on-ramp and E. Smith Road, there will be daily single lane closures in both directions of the roadway. These closures will be taking place from 9 a.m. to 3 p.m. each day to provide crews access to a safe work zone. Those travelling through this area may experience minor delays.  

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