Central 70

The Project

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. It's time to bring this aging highway into the 21st century and rejoin communities along the way.

The Central 70 Project will reconstruct a 10-mile stretch of I-70 between Brighton Boulevard and Chambers Road, add one new Express Lane in each direction, remove the aging 55-year-old viaduct, lower the interstate between Brighton and Colorado boulevards, and place a 4-acre park over a portion of the lowered interstate.

CDOT has made a number of commitments to the local community as part of the Central 70 Project. These cover a range of issues, from mitigating the impacts of construction noise and dust, to contributing funding to affordable housing and fresh food access.

Project Brochure


Construction Schedule

Construction will begin on the Central 70 Project this summer. One of the first action items is the closure of 46th Avenue between York Street and Brighton Boulevard, to allow for the construction of a railroad detour (adjacent to Purina, under the I-70 viaduct). Download the graphic.

The Cover

An active and vibrant public space planned for CDOT's first highway cover. This 4-acre space is being designed in partnership with local residents, the City of Denver and Swansea Elementary School. Download the Cover Design Fact Sheet.

Final Cover and Park Design

Download a larger view
and other fact sheets.

Business and Workforce Opportunities

CDOT is working to maximize the economic benefits of the Central 70 Project for Colorado's small and disadvantaged businesses and local workforce. This Project is one of a few nationwide that have received special permission from the Federal Highway Administration to conduct pilot projects on local, geographic-based hiring. These goals are combined with requirements for the utilization of small and disadvantaged businesses and investments in workforce training.

Download the Local Focus Area Map (3MB PDF)

Environmental Studies

The Central 70 Project was developed through a lengthy environmental study process, known as an Environmental Impact Statement (EIS). The EIS for the I-70 East corridor began in 2003 and was completed on January 19, 2017 when the Federal Highway Administration (FHWA) issued a final Record of Decision (ROD). CDOT conducted the EIS on behalf of the FHWA, following National Environmental Policy Act (NEPA) requirements. A complete record of the EIS process, including all study documents, analysis and records of public meetings, is available at

As the Central 70 Project moves forward, written re-evaluations may be required to analyze changes in project scope and/or to provide updates or explanations. These documents will be posted on this site as they are prepared.

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