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Road Widening Projects

Construction Underway on E-470 Road Widening & Trail Expansion From I-70 to 104th Avenue

People choose to take E-470 because it provides a quick, safe, and reliable commute. To maintain this level of service, E-470 must build more capacity now to stay ahead of population growth coming to the region to keep people moving in the east Denver metro area. Since 2016, E-470 has been working to build more capacity on its 47-mile roadway and has also built more than 12.5 miles of the High Plains Trail through its road widening projects.

In fall 2022, E-470 began construction on the next phase of road widening to add a third travel lane in each direction from I-70 to 104th Avenue to help move more people along this 11-mile stretch and stay ahead of population growth in the area. The project also includes extensions of the High Plains Trail, which runs adjacent to the roadway. A new concrete multi-use path will be built from 26th to 64th Avenues in Aurora and from 88th to 104th Avenues in Commerce City to provide better connections to other trails in the region for people on bikes and on foot. The goal is to eventually connect the High Plains Trail to Peña Boulevard and continue extending it further north.

Additional Travel Enhancements:

  • New interchanges at 38th Avenue and at 48th Avenue.
  • Expanding the existing interchange at 64th Avenue and widening the bridge over E-470 as new development moves toward the airport, just east of the Gaylord Rockies Resort and Convention Center.
  • Building a collector road at the E-470 northbound interchange with Peña Boulevard (like the southbound Peña interchange), which will enhance safety by separating traffic on the interchange from mainline through traffic.
  • New deer fencing to protect wildlife and reduce vehicle-wildlife collisions on the roadway.
  • Freshly paved asphalt surface to provide a smoother ride.

While construction is underway, concrete barriers will be in place throughout the work zone. People should expect intermittent single-travel lane closures on weekdays between 9 a.m. and 3 p.m. as well as during overnight hours between 7 p.m. and 5 a.m. When cones are set and picked up during these daily lane closures, construction crews, and law enforcement will slow roll traffic to speeds around 5 mph. This is done for the safety of the workers in the construction zone. E-470 message boards will alert people about the work in advance. The public’s patience and cooperation are greatly appreciated. All work is weather-dependent and subject to change.

Crews will work in phases, beginning at the southern end of E-470 from I-70 to north of Peña Boulevard. As the project gets underway, E-470 will notify its customers in advance about potential travel impacts. The project is anticipated to be complete by 2025.

Want to be the first to know about potential travel impacts and project milestones? Click here to join our project updates email list.

Project Map

Project Materials

Improving Connectivity

One of the largest activities within the E-470 Road Widening and Trail Expansion Project is the addition of two new interchanges at 38th and 48th Avenues.

Currently, only two ramps on the northbound side at 38th Avenue give the Aurora Highlands – 12,500 homes, a 4,000-acre master planned community – access to E-470 and vice versa. Construction on the 38th Avenue interchange will add new ramps in each direction and an additional bridge over E-470. The existing 48th Avenue bridge over E-470 will be widened and ramps will be added in each direction. These two interchanges will also improve connectivity and traffic flow to the newly developed communities in Green Valley Ranch, such as High Point and the Windler Homestead. In addition, the existing E-470 Toll Plaza will be relocated about one-half mile south of its current location to make room for the 38th Avenue interchange.

Due to the extent of work needed to construct both the new 38th Avenue bridge and the tolling gantry over E-470, there will be a few travel impacts for customers in addition to standard project lane closures. Upcoming closures or detours will be listed below. All work is weather-dependent and subject to change. Customers will also be notified of the impacts via E-470 social media and the Road Widening Project email list. You can sign up for the list by clicking here.

Upcoming Travel Impacts


On Tuesday, May 28, Peña Boulevard under E-470 will return to its original configuration at midnight. Please use caution while driving this new alignment.


On Saturday, May 18, southbound E-470 will be closed at 64th Avenue from 9 p.m. – 6 a.m. Traffic will detour over the 64th Avenue. 64th Avenue at E-470 will be closed to ensure a smooth traffic flow over the ramps.

On Saturday, May 18, from 5:00am to noon, the on-ramp to northbound E-470 from I-70 will be closed at the 19th Avenue intersection. Eastbound and Westbound traffic from I-70 wishing to go north on E-470 will use E-470 south to the 6th Parkway/Stephen D. Hogan Parkway exit (exit 19) then head North back onto E-470. Tolls will be waived at 6th Parkway for this detour.


On Friday, May 17, northbound E-470 will be closed at 64th Avenue from 9 p.m. – 6 a.m. Traffic will detour onto the 64th Avenue ramps. 64th Avenue at E-470 will be closed to ensure a smooth traffic flow over the ramps.


On Thursday, May 16, the Peña Boulevard Eastbound Collector Distributor road will return to its original configuration at midnight. For access to northbound E-470, please take Exit 6. This will be the only way to get to northbound E-470 from Peña Blvd.


E-470 has begun work to prepare for final paving from I-70 to 56th Ave.  Included in this work is adjusting the bridge joints at the Smith Road/UPRR overpass at MM 21, just north of I-70. 

This has temporarily worsened the ‘bump at the end of the bridge’ for both northbound and southbound.  Crews are working diligently to prepare and begin final lift paving over the next few weekends which will greatly improve the ride over these bridges.  We appreciate your patience as we continue to move toward opening the southern 4 miles of the project to 3 lanes.


Northbound E-470 to Westbound I-70 (Exit 20B) will be closed from 8 pm on 5/13 to 5 am on 5/14.

Customers looking to access westbound I-70 will need to take Exit 20A (EB I-70) and follow the detour.

Exit 20B will be closed for the placement of the High Line Canal Trail bridge crossing over I-70.


Sunday night, April 28 through Monday morning, April 29, crews will pour the deck for the future widened bridge at E-470 above Peña Blvd.

9 p.m. Sunday, April 28, through 5 a.m. Monday, April 29 overnight:

  • Expect lane closures on northbound E-470 near Peña Blvd.
  • Expect E-470 southbound closure near Peña Blvd. Traffic will be detoured via a Collector-Distributor road. Minimal travel impacts are expected.
  • All work is weather-dependent and subject to change.


High Plains Trail will be closed between Jewell Ave. and Stephen D. Hogan Pkwy from Monday, April 15, until Friday, April 26 for construction activities at the new E-470 Maintenance Facility.


New traffic alignment at Peña Blvd.

New alignment is in place when exiting from Peña Blvd. to E-470. This traffic alignment will remain in place until April 8, 2024. For E-470 southbound, take exit 6A. For E-470 northbound, (exit 6B), continue eastbound on Peña Boulevard.

All work is weather-dependent and subject to change.


Construction continues on the Road Widening project with the latest traffic shift on eastbound Peña Blvd.

Drivers and customers, please be aware that the E-470 northbound entrance is not closed – just shifted over with access through the median of Peña Blvd.

You also do not have to use E-470 southbound and turn around at 64th Avenue – just continue a little farther eastbound underneath E-470 to access the loop around to northbound E-470.

Earlier this week, this change in traffic pattern created driver confusion – drivers ended up going southbound on E-470 instead of northbound, therefore having to turn around via the 64th Avenue interchange and going through both ramp toll locations. Tolls will be waived on 64th Avenue North and South on Wednesday 3/6/24. Along with waiving tolls, there have been enhanced traffic control features. This new traffic shift will be in place for about 4 weeks.

All work is weather-dependent and subject to change.

* E – 470 is putting toll revenue dollars to work to expand the highway for future traffic and while doing so, safety during placement and pick up of traffic control is our top priority – both for our customers and for our contractors.  This inevitably causes slowdowns for those ‘stuck’ in traffic. We certainly understand the frustration of sitting in a traffic jam on a toll road and we work continuously with our contractors when traffic control is permitted and to reduce traffic impacts as much as possible. We certainly appreciate you choosing E-470 and will continue to try to minimize customer impacts during this complex project.

Questions about the Project?

You can contact the project team by phone at (303)376-0156, by email at, or by filling out the form below.

Road Widening Questions

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Previous Roadway and Trail Improvements

In 2021, the E-470 Public Highway Authority added a third travel lane in each direction from Quincy Avenue to I-70 and extended the High Plains Trail by six miles. Additionally, the project expanded bridges, installed new entrance/exit ramps, upgraded traffic signals, improved drainage for stormwater runoff, and paved the roadway with fresh asphalt to provide a smoother ride.

Fun Facts:

• More than 7,200 cubic yards of structural concrete was poured.
• 180,000 tons of asphalt was rolled out.
• 15 miles of new or reset wildlife fencing was installed along the roadway to reduce vehicle-wildlife crashes on the roadway.
• 800,000 cubic yards of earthwork was completed.

The project spanned over two years for a total cost of $94.4 million, which was under budget and funded from Authority capital reserves as planned. Watch the video below to learn more!

Related Information

2020 Master Plan

Learn more about E-470’s Master Plan.

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Driving E-470

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E-470 Snow Removal

Learn more about E-470’s snow removal efforts.

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