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Parsons

East Colfax Bus Rapid Transit Project

Purpose

The project will deliver center-running BRT service along East Colfax Avenue from Broadway to Yosemite, with dedicated transit lanes, enhanced stations, and improved pedestrian and bicycle connections. Beyond this area, BRT will be side-running. Once in service, the East Colfax BRT will reduce transit travel times by up to 30 minutes, expand affordable and reliable access to more than 250,000 jobs and community services, enhance comfort and safety, and support placemaking and economic development opportunities along the corridor.

Impact

The East Colfax BRT Project was developed to meet the increasing demand for transit travel along Denver’s busiest corridor and to support the region’s future growth with safe, affordable, and equitable mobility. With population and employment expected to increase significantly through 2040, weekday ridership on East Colfax is projected to rise by as much as 40 percent, yet the corridor is already operating near capacity during peak hours. Its limited right-of-way leaves little room for expansion, and without major improvements, congestion and delays will only worsen, threatening reliability for the thousands of people who depend on Colfax transit every day. This project addresses these challenges with a faster, more reliable, and more accessible transit service that strengthens transportation connections throughout the region and reduces greenhouse gas emissions by enabling more non-motorized trips. It also advances Denver’s Vision Zero initiative, making the corridor safer for pedestrians, cyclists, motorists, and transit riders. Beyond transportation benefits, this project supports long-term economic vitality, encouraging future investment in the corridor, and expanding placemaking opportunities.


  • Envision Rating: Silver

  • Envision Award Date: July 29, 2025

  • Envision Version: v3

  • Project Owner: City and County of Denver

  • Project Sector: Transportation

  • Project Type: Road

  • Lead Envision Firm: Parsons

Partners

City and County of Denver, Regional Transportation District (RTD), City of Aurora, Colorado Department of Transportation (CDOT), U.S. Department of Transportation, Federal Transit Administration, Denver Regional Council of Governments (DRCOG), Colfax Mayfair Business Improvement District, Colfax Ave Business Improvement District, Bluebird Business Improvement District

  • Construction contractor: Kraemer, N.A.

  • Total Project Cost: $280.4 million

  • Project Delivery Method: Construction Manager / General Contractor

Project Timeline

  • 2012–2014: Planning and initial analysis of corridor alternatives

  • 2015–2016: Initial recommendation for side-running BRT on Colfax

  • 2017–2018: Introduction and evaluation of center-running BRT on Colfax

  • 2018–2019: Determination of center-running BRT as the locally preferred alternative

  • 2020–2022: Preliminary design, engineering and environmental review

  • 2023–2024: Final design and FTA Small Starts application and grant approval

  • 2024–2027: Construction, testing and commissioning


Current status: In construction with approximately 31% complete as of September 2025


Project Website: East Colfax Avenue Bus Rapid Transit - City and County of Denver


ISI Envision Profile: https://sustainableinfrastructure.org/project-awards/east-colfax-bus-rapid-transit-project/

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