RTD Will Open New Bus-Only Lanes on East Colfax

The dedicated transit lanes will begin serving riders between Broadway and Colorado Boulevard starting on September 27.

Updated on Sept. 24, 2026 in Openings & Closings

RTD Will Open New Bus-Only Lanes on East Colfax

Live Poll

Do you support the expansion of dedicated bus lanes in your area despite construction impacts?

The Regional Transportation District (RTD) will launch bus-only transit lanes on East Colfax in Denver on September 27, 2026. Routes 15 and 15L will move to the center lanes as part of the initial phase of a broader transit project.

Why it matters

This infrastructure upgrade aims to improve transit efficiency and passenger safety along one of the busiest corridors in Denver. The project features center station platforms equipped with enhanced security and accessibility tools to modernize the commuter experience.

The entire East Colfax bus rapid transit project is supported by a total estimated budget of $280 million. Ongoing construction continues to push eastward from Colorado Boulevard toward I-225.

The players

Regional Transportation District

The Regional Transportation District is the public transit agency responsible for operating bus and rail services throughout the Denver metropolitan area.

Carla Madison Recreation Center

Carla Madison Recreation Center is a Denver city facility that will host the upcoming project milestone celebration and community event.

The details

Buses will now operate in two center lanes with new platforms featuring PA systems, lighting, security cameras, and emergency phones. Passengers will also benefit from near-level boarding ramps and interior bike racks designed to increase accessibility and convenience.

Construction on the project started in 2024.
Bus-only lanes open for passenger service on September 27, 2026.
A project milestone celebration and small business hop take place on September 28, 2026.
Full BRT service is expected to launch by the end of 2027.

Market Landscape

This transition follows the infrastructure development schedule set by the East Colfax Bus Rapid Transit project. The opening represents a major shift in public transit utility that positions the city to compete with regional commuter standards as the full system nears completion.

Commuters on routes 15 and 15L can expect faster travel times due to the dedicated center lanes and improved boarding accessibility. Local residents and shoppers are invited to participate in a small business hop event held at the Carla Madison Recreation Center on September 28.

The takeaway

The implementation of dedicated transit lanes prioritizes reliable travel times for bus riders along the busy Colfax corridor. Travelers should familiarize themselves with the new center station access points and boarding procedures ahead of the September 27 launch.