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East Colfax Bus Rapid Transit (BRT) Project

East Colfax BRT Logo

Construction Updates for the Mayfair Neighbors

The East Colfax Bus Rapid Transit (BRT) Project is one of the largest transportation improvements in Denver in decades. Construction is expected to continue through 2027 and will bring significant changes to East Colfax Avenue, including dedicated bus lanes, new transit stations, pedestrian improvements, streetscape enhancements, and roadway reconstruction.
 

This page is maintained by Mayfair Neighbors Inc. (MNI) to provide residents with a high-level summary of major construction updates affecting the Mayfair neighborhood. Rather than sorting through multiple government websites, residents can use this page to quickly understand what is happening between approximately Eudora Street and Monaco Parkway and how those activities may impact travel, parking, sidewalks, transit, and nearby businesses.

Project Overview

The East Colfax BRT Project extends approximately five miles from downtown Denver to Aurora. Once complete, buses will operate in dedicated center-running lanes, providing faster and more reliable transit service while improving pedestrian safety and accessibility.
 

Major improvements include:

  • Dedicated center-running bus lanes

  • New BRT stations

  • Improved sidewalks

  • ADA accessibility upgrades

  • New traffic signals

  • Improved crosswalks

  • New street trees and landscaping

  • Utility upgrades

  • Complete roadway reconstruction in many areas

Construction began in late 2024 and is expected to conclude in 2027. Throughout construction, different portions of Colfax will experience varying levels of traffic impacts depending on the phase of work.

Current Construction Status (July 2026)

Construction activity has officially reached the Mayfair area.

Current work is concentrated between Eudora Street and Holly Street, with construction progressing eastward over time.

Residents should expect:

  • Temporary lane shifts

  • Median demolition

  • Utility investigations ("potholing")

  • New traffic patterns

  • Construction of the future Elm Street BRT Station

  • Periodic intersection closures

  • Temporary parking restrictions

  • Increased construction equipment and crews

Access to homes, sidewalks, and businesses is expected to remain available throughout construction, although temporary detours may occur. Because East Colfax is wider through Mayfair than in Capitol Hill, project officials anticipate being able to maintain more traffic lanes and parking where feasible during construction.

Past Updated (January to June 2026) 

During the first half of 2026, construction activity remained primarily west of the Mayfair neighborhood while crews completed utility work, roadway reconstruction, and new BRT stations. Throughout this period, Denver and RTD continued preparing for construction in Mayfair by advancing project planning, operational testing, and future traffic changes.

Notable milestones included:

  • June: The city released additional details about the final roadway configuration and announced construction would soon advance into the Mayfair neighborhood.

  • May: Construction officially expanded across the full East Colfax BRT corridor.

  • April: Denver approved additional project management funding to support construction through completion.

  • March: RTD began operational testing for future BRT service.

  • January–February: Construction continued west of Colorado Boulevard, with minimal direct impacts to Mayfair residents.

What Residents Can Expect Next

Over the coming months, residents should expect construction to continue moving eastward through Mayfair.

Future work is expected to include:

  • Construction of additional BRT stations

  • Sidewalk reconstruction

  • New pedestrian lighting

  • New traffic signals

  • Street tree installation

  • Drainage improvements

  • Final paving

  • New roadway striping

  • Permanent bus-only lanes

  • Landscaping

Construction schedules remain subject to weather, utility coordination, and contractor progress.

Frequently Asked Questions

Frequently Asked Questions

For residents seeking additional detail or official project information:

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