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Colfax Avenue has long been a key east-west transportation route for Downtown Denver, Auraria Campus, Anschutz Medical Campus and nearly 50 schools — it is also a thriving community, with retail, nightlife and residential development creating a "Main Street" feel along one of the area's oldest, most historic streets. With population and business growth in the area expected to increase significantly in the next 20 years, there is an opportunity to reimagine how Colfax functions, looks and feels while accommodating an increasing need for enhanced mobility and safety along the corridor.

Bus Rapid Transit (BRT)


After years of studying East Colfax Avenue and gathering significant community input, the City and County of Denver is looking to implement center-running bus rapid transit (BRT) along the corridor, with a dedicated transit lane in each direction from Broadway to Yosemite. Rolling out BRT along one of Denver’s busiest corridors to move more people, more efficiently, is a key component of Mayor Michael B. Hancock’s Mobility Action Plan.


To date, Denver has secured $55M in funds for the East Colfax BRT through the Elevate Denver Bond Program, which voters passed in 2017. The City intends to leverage Elevate Denver Bond funding, along with funds from other available sources, to secure additional grant funds to achieve the full vision for the East Colfax BRT.

  • Significant shift from vehicles to transit due to improved travel times, reliability and convenience
  • Bus ridership more than doubles – from 22,000 up to 50,000 daily riders by 2035
  • Improved transit travel time of up to 15 minutes during peak hours by 2035
  • Improved safety, connectivity, accessibility and mobility options for all travelers
  • Increased streetscaping and economic development opportunities
  • Improved access to 280,000 jobs and nearly 50 schools along and near Colfax Avenue

Denver has selected Parsons Transportation Group to complete the National Environmental Policy Act (NEPA) process and preliminary design for the project. If approved by City Council, this process is expected to begin in late 2020 and take up to three years to complete. An estimated timeline for construction would follow; typical timelines for large scale, federally-funded projects in Denver are estimated at 5-8 years from launch of the NEPA process to completion.

Denver to Recommend Consultant to Advance Bus Rapid Transit on East Colfax Avenue

Aug 13, 2020 — Denver has selected Parsons Transportation Group to complete the National Environmental Policy Act (NEPA) process and preliminary design for the project following an evaluation of proposals that were submitted by shortlisted consultants this spring. The City will now enter negotiations with the consultant and expects to bring a contract to Denver City Council for approval this fall. Read more

Pedestrian Improvements

Voters also included $20M for pedestrian improvements on Colfax Avenue in the Elevate Denver Bond program. These funds will provide permanent improvements including medians, curb extensions, and enhanced crosswalks at key intersections and deliver streetscape improvements such as furniture, trees and lighting in certain business improvement districts (BID). The BIDs include West Colfax, Colfax BID, Bluebird BID, and Colfax-Mayfair BID. Construction of permanent civil and safety improvements on East Colfax will be linked to BRT project implementation. 

With BRT implementation several years away, Denver is moving forward on near-term safety improvements at 12 intersections along East Colfax, utilizing Capital Improvement Program (CIP) dollars, not related to the bond.  The intersections include:

  • Grant
  • Logan
  • Pearl
  • Washington
  • Clarkson
  • Lafayette
  • High
  • Adams
  • Hudson Street
  • Krameria
  • Monaco
  • Uinta

Improvements will include the addition of paint, vertical elements such as bollards and signage that will serve to visually narrow the roadway at these locations, reduce vehicular exposure for crossing pedestrians at intersections, create pedestrian refuges, pull back parking at intersections, as needed, to provide greater visibility for turning vehicles and pedestrians, and slow turning speeds. At some intersections, leading pedestrian intervals will be added to signal timing and right turns on red will be restricted.

These near-term safety improvements will inform the future design of permanent improvements. Installation is anticipated in late 2019/early 2020.

Because pedestrian improvements on West Colfax are not tied to the Colfax BRT project, Denver is moving forward with improvements prioritizing safety needs from Sheridan to Irving. A preferred design based on public input and a process for prioritizing implementation are being developed. Further public involvement will take place at the end of summer 2019. 

Project Status

Colfax Corridor Connections logo

The study began in 2012, with an analysis of current and future needs for the corridor. Following six years of outreach and community input, a recommendation for center-running bus rapid transit (BRT) was presented in 2018. A required environmental analysis and design process is expected to begin in late 2020, to include opportunities for community participation and engagement. Information about construction and necessary funding would be determined after the completion of the design and environmental review.


Project History

Conceptual design for East Colfax Bus Rapid Transit identifies proposed station areas (PDF) where East Colfax intersects with:

  • Mariposa/Lipan
  • Delaware
  • Civic Center
  • Pennsylvania
  • Downing
  • Williams
  • York/Josephine
  • Steele
  • Colorado
  • Elm
  • Hudson
  • Krameria
  • Monaco
  • Quebec
  • Uinta
  • Yosemite

Preliminary design plans for additional pedestrian crossings (PDF) at signalized intersections were also identified in 2018 conceptual designs, including where East Colfax intersects with:

  • Madison
  • Bellaire
  • Tamarac
  • Willow

See additional materials in the Project Archive

  • 2012-2015 — Planning, outreach, and initial analysis of corridor needs
  • 2015-2016 — Initial recommendation for side-running BRT system on Colfax and community outreach
  • 2017-2018 — Introduction and analysis of center-running BRT in exclusive lanes and community outreach
  • 2018 — Preliminary recommendation of center-running BRT, community outreach and conceptual design development 


About the BRT Project

The Colfax Corridor Connections Community Task Force comprises individuals representing neighborhood organizations and business interests within the corridor. This group provides an important connection between the project team and the community and its input will help inform the process. The Community Task Force is also an important resource for sharing project information with the constituents they represent.

Each of the following organizations has been invited to participate in the Community Task Force program:

Denver Business Groups

  • Colfax Business Improvement District 
  • Colfax On The Hill
  • Downtown Denver Partnership 
  • East High School 
  • The Fax Partnership
  • Points Historical Redevelopment Corporation
  • Santa Fe Drive Redevelopment Corporation

Denver Neighborhood/Community Groups

  • Balustrade HOA
  • Bellvue-Hale Neighborhood Association
  • Capitol Hill United Neighborhoods
  • City Park West Neighborhood Association
  • Civic Center Association
  • Congress Park Neighbors, Inc.
  • Cultural Arts Residential Organization
  • Curtis Park Neighbors
  • Downtown Denver Residents
  • East Montclair Neighborhood Association
  • Golden Triangle Museum District
  • Greater Park Hill Community, Inc.
  • Historic Montclair Community Association
  • La Alma/Lincoln Park Neighborhood Association
  • La Alma Community Action Group
  • Mayfair Neighbors, Inc.
  • Neighbors And Friends For Cheesman Park
  • South City Park Neighborhood Association
  • South Park Hill Neighborhood Organization
  • Sumner Neighborhood Association
  • Swallow Hill Neighborhood Association
  • Triangle Neighborhood Association
  • Unsinkables, Inc.
  • Uptown Alliance
  • Wyman Historic District Neighborhood Association

Aurora Business Groups

  • Aurora Chamber of Commerce
  • Aurora Economic Development Council

Aurora Neighborhood/Community Groups

  • Colfax Community Network
  • Friendly Village Aurora N.O.
  • Hillcrest Village HOA
  • Neighborhood Action Team
  • Northwest Aurora Neighborhood Association
  • Norfolk Glen Neighborhood Association

Project Manager: Ryan Billings

BRT Conceptual Design Technical Report (November 2018)

The East Colfax Corridor BRT Project study area is a nine-mile stretch of East Colfax Avenue between Osage Street in Denver and Potomac Street in Aurora. The Center-Running Bus Rapid Transit (CRBRT) feasibility and conceptual design study is focused on the portion of the corridor that falls in the city of Denver, between Osage Street and Yosemite Street. The Technical Report includes background information on the project, concept designs, traffic analysis, and conceptual cost estimates.

Supporting Materials:

  • Conceptual Design Detail
  • Traffic Analysis Details
  • Conceptual Capital Cost Details

To request a copy of the report, please email


BRT: Frequently Asked Questions

BRT on East Colfax Avenue presents an opportunity to reimagine how Denver’s main street looks, functions and feels.

The corridor is one of Denver’s busiest transportation networks for all modes of travel, especially transit. The bus routes serving East Colfax have the highest ridership of all RTD routes – more than 22,000 riders per weekday. Current bus service in the corridor is near capacity and even small service interruptions can result in passengers being left at stops to wait for the next bus.

The City is moving forward with BRT on Colfax because doing nothing is not an option. Over the next 20 years, the corridor is expected to experience 25% growth in the number of travelers, 67% growth in employment and 25% growth in population. Denver cannot continue to grow and create more people-friendly spaces without safely and efficiently moving more people through the East Colfax corridor. 

BRT is a premium transit service with upgraded buses, enhanced stations and dedicated transit lanes wherever possible. Upgrades include recognizably branded buses, as well as low-floor and multi-door boarding features to make it easier and faster for all riders, especially those with special needs, to get on and off. Station amenities would feature real-time passenger information, off-bus ticketing, as well as shelter, safety and accessibility improvements.  

The goal of Colfax Corridor Connections is to improve transit, overall mobility, safety and livability within the corridor now and for generations to come. Benefits of BRT on Colfax include, but are not limited to:

  • Significant shift from vehicles to transit due to improved travel times, reliability and convenience
  • Bus ridership more than doubles – from 22,000 up to 50,000 daily riders by 2035
  • Improved transit travel time of up to 15 minutes during peak hours by 2035
  • Improved safety, connectivity, accessibility and mobility options for all travelers
  • Increased streetscaping and economic development opportunities
  • Improved access to 280,000 jobs and nearly 50 schools along and near Colfax Avenue

By repurposing one general traffic lane in each direction on Colfax between Broadway and Yosemite, all transit activity will occur within two center-running transit only lanes. Busy urban streets like Colfax are good candidates for dedicated transit lanes because the separation of buses and vehicles better organizes traffic flow and improves travel efficiency. Center transit lanes also reduce conflicts with parking and other curbside activities, while creating enhanced streetscaping opportunities and improving pedestrian safety by moving transit stations to the center.  

The East Colfax BRT project has developed preferred BRT station locations as part of the Alternatives Analysis. These locations are viewed as crucial to the success of the project. However, through the Alternatives Analysis process, as well as outreach for the East and East Central Neighborhood Planning Initiative (NPI) efforts, a few locations/areas have been identified for consideration for future station changes/additions. They include:

  1. Moving Williams St. Station to Park Ave.
  2. Replacing Steele. St. Station with two stations at 1/3 mile spacing between York/Josephine and Colorado. Locations considered include Fillmore and Madison or adjacent streets.
  3. Additional stations east of Monaco.

The upcoming preliminary engineering and environmental phase will address these potential changes through the design process. The remainder of stations are considered to be final locations.

Managing vehicle turns across transit lanes is essential to successful BRT on Colfax. To maintain local access and improve safety, left turns will be allowed at signalized intersections only. Eliminating unprotected left turns significantly reduces potential conflicts with pedestrians, bicyclists and other vehicles. As more detailed design plans are developed, potential intersections will be identified where new traffic signals and U-turn facilities may be added to improve safety and local access.

Traffic congestion and diversion to adjacent streets occurs today and will increase with or without the project. Minor additional diversion to adjacent streets is projected due to BRT on Colfax and traffic impacts are expected to be limited to a few intersections. In order to safely keep vehicles and buses moving, a number of operational improvements will be made on Colfax and parallel roadways. These options include, but are not limited to: speed reduction and safety improvements (i.e., traffic calming), signal timing/optimization, extended or new turning lanes, and minimal capacity improvements through re-striping or minor curb/gutter relocation (all within existing right-of-way).

BRT would provide more efficient service for the current 15 and 15L routes. By consolidating portions of these routes with BRT service, transit riders’ overall travel times will be faster or maintained. While some riders may have to walk slightly farther to BRT stations, buses will arrive more frequently and predictably. Conceptual BRT stations are roughly ½ mile apart, so riders would have to walk no more than ¼ mile on Colfax to get to the bus. BRT also offers an easier boarding experience and provides opportunities for improved sidewalks, making it easier for people with mobility challenges to ride.

The final routing and stop locations of these routes will be further defined as the project moves forward. Ultimately, BRT would improve speed, reliability and the overall user experience of transit on East Colfax while still offering an RTD Local fare for the length of the service.

A number of other multi-modal transportation improvements are included as part of BRT on Colfax. As the project undergoes more detailed design, a package of supplemental mobility improvements will be finalized. These include bicycle/pedestrian facilities, signage/wayfinding, station access, connectivity with existing RTD services and more.

Specific changes to on-street parking will be identified as the project moves forward. Generally, some on-street parking spaces will be added by moving transit stations to the center of Colfax, while others will be eliminated – primarily near intersections adjacent to bus stops – to improve pedestrian access and safety. A full analysis of on-street parking and station configurations will be completed during the upcoming detailed design phase.

As the project moves forward, both local and federal funding opportunities for BRT on Colfax are being pursued. Based on available funding, a more detailed design and a project implementation schedule will be developed in 2019. Initial targets anticipate construction could begin as soon as 2022.

Public input is vital to making decisions that are in the best overall interest of the community. The project team will continue to implement a proactive public outreach program designed to be responsive to feedback from the community. Additional information will be available on this website.