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Reconnecting Communities

Central 70 between I-25 and Chambers Road, is one of Colorado's economic backbones. It is home to 1,200 businesses, providing the regional connection to Denver International Airport and carrying upwards of 200,000 vehicles per day. The Colorado Department of Transportation (CDOT) is bringing this aging highway into the 21st century and rejoining communities along the way.

Project Updates

General Description of Construction Activities for the Week

New travel impacts — Week of November 11, 2018

Northbound Vasquez Boulevard from 46th Avenue to Steele Street has reopened as the truck access to westbound I-70.

46th Avenue between York Street and Colorado Boulevard has moved to one lane in each direction in a head-to-head configuration in the current westbound lanes. See the fact sheet for more information.

Night time general construction will occur at:

  • York Street between 45th and 48th avenues
  • Road between High and Gaylord streets (north of 46th Avenue)
  • 46th Avenue between York Street and Colorado Boulevard
  • I-70 between Quebec Street and I-225 Interchange
  • I-70 at the Peoria Street Interchange

Ongoing Closures

  • 46th Avenue is in a one-lane/each direction traffic configuration between York and Steele streets. Watch for signage when traveling through the area. Here are the details.
  • York Street on-ramp westbound I-70 is permanently closed as part of I-70 final design and to construct the new Union Pacific Rail Road bridge. See the fact sheet.
  • 46th Avenue between Brighton Boulevard and York Street. Use I-70 to navigate east and west in this area. See the fact sheet (PDF)
  • The road north of 46th Avenue between High and Gaylord streets. Access to properties from 47th Avenue is maintained. See the fact sheet (PDF)
  • Southbound Vasquez Boulevard from Steele Street to 46th Avenue is permanently closed. Traffic will travel south on Steele Street and turn right on 46th Avenue.

West Travel (Brighton Boulevard to Colorado Boulevard)


Nov. 12 - 16 | 8:30 a.m.-3:30 p.m.
Eastbound I-70 off-ramp to Colorado Boulevard: lane restrictions

Nov. 14 & 15 | 8:30 a.m.-3:30 p.m.
Westbound I-70 off-ramp to Colorado Boulevard rigth lane restrictions


Nov. 11 – 15 | 8 p.m.-5:30 a.m.
46th Avenue: one-way flagging operations in the following areas:

  • Between Fillmore and Milwaukee streets
  • Between York and Josephine streets

Nov. 12 - 14 | 8:30 a.m.-3:30 p.m.
York Street: southbound lane restrictions between East 49th and East 51st avenues; watch for flaggers

Nov. 12 - 16 | 8:30 a.m.-3:30 p.m.

  • 46th Avenue: eastbound rigth lane restriction between Madison and Garfield streets
  • York Street: southbound lane restrictions between Steavenson Place and 45th Avenue
  • Gaylord Street, south of 47th Avenue: single lane restrictions; watch for flaggers
  • Steele Street: southbound lane restrictions between westbound I-70 off-ramp and 46th Avenue
  • Fillmore Street between 45th and 46th avenues: single lane restrictions; watch for flaggers

Nov 14 & 15 | 8:30 a.m.-3:30 p.m. 
Intersection of 46th Avenue and Colorado Boulevard

There is currently a lot of construction activity in north Denver. Visit the NAVIGATE - North Denver page for updated information on available routes, detours, and road closures.


Project Background

After more than ten years of extensive study, the CDOT recommended to the I-70 East Environmental Impact Statement the partial cover lowered option as preferred alternative, which was developed with community input and has broad public support.

The purpose of the project is to implement a transportation solution that improves safety, access, and mobility and addresses congestion on I-70.  The need for this project results from the following issues:

  • Increased transportation demand
  • Limited transportation capacity
  • Safety concerns
  • Transportation infrastructure deficiencies


The CDOT has made a number of commitments to the local community as part of the Central 70 Project, and is working alongside the city to uphold and implement them. The commitments cover a range of issues, from mitigating the impacts of construction noise and dust to contibuting to affordable housing and fresh food access.

The Central 70 Project seeks to bring a number of improvements that include:

  • Complete reconstruction of I-70 from Brighton Boulevard to I-270, including the addition of one Express Lane in each direction
  • Removal of the 50 year-old viaduct and lowering the interstate between Brighton and Colorado boulevards
  • Widening I-70 from I-270 to Chambers Road to accomodate one Express Lane in each direction
  • Restriping I-70 from I-25 to Brighton Boulevard to accomodate one Express Lane in each direction


Project Timeline

  • 2003: CDOT starts studying a series of improvements to this corridor to make the interstate safer, relieve congestion, and address aging infrastructure
  • 2006: the highway and transit elements of the I-70 East corridor were separated into two independent studies
  • 2008: CDOT publishes a draft of the EIS, no preferred alternative identified
  • 2010: the Preferred Alternative Collaborative Team (PACT) was formed consisting of 26 stakeholders representing federal and state agencies, local governments, and community and businesses interests

  • 2012-2013: CDOT introduces the concept of building a park over I-70 along with the partial lowered alternative
  • 2013: in April, the project team held public meetings attended by more than 400 people, during which the community urged CDOT to move forward with the PCL alternative
  • 2014: the Supplemental Draft EIS is published and identifies a preliminary preferred alternative. The document received 900 comment submittals. In October, the City and County of Denver and a coalition of regional leaders confirmed their support of the Partial Cover Lowered preferred option for I-70
  • 2016: in January, CDOT released the Final Environmental Impact Statement, which compiles the results of more than 10 years of study. The release was followed by a 45-day public review period and two public hearings to complete the study process. Later in the year, CDOT held three public workshops to shape the final design concept for the park cover


  • January: the Federal Highway Administration approved the Record of Decision (ROD), allowing the project to move forward. The ROD is available online.
  • August: CDOT selects Kiewit Meridiam Partners to design, build, finance, operate and maintain the project
  • August - September: CDOT and the City and County of Denver enter a partnership to implement mitigation and home improvements to 268 homes located within the project's mitigation boundary


Construction is expected to start in summer 2018