Thousands of riders in Southeast Seattle can now expect shorter travel times and safer street crossings thanks to the newly completed second phase of the Rainier Avenue South Bus Lane project. The upgraded corridor, a major part of Seattle’s broader transit strategy, features more than two miles of continuous northbound bus-only lanes and improved pedestrian infrastructure designed to serve one of the city’s busiest transit corridors.
The enhancements are the latest in a series of investments made possible by the Seattle Transit Measure, approved by voters to expand and improve transportation services across the city. The Rainier Avenue South project, led in partnership with King County Metro and local community groups, is a key component of that initiative.
Rainier Avenue South is a critical connector for Southeast Seattle neighborhoods, linking residents to schools, businesses, parks, and public services. As both a main arterial and a minor freight route, it also plays an essential role in local commerce and goods movement. But for the tens of thousands of people who rely on King County Metro bus routes in the Rainier Valley, the street’s most vital function is as a transit lifeline.
Route 7 is at the heart of that system. Carrying an average of 12,000 riders each weekday as of September 2025, it is one of Metro’s highest-ridership lines and the backbone of transit in the corridor. Buses are scheduled to arrive every 10 minutes or less, but delays from congestion have made service inconsistent, particularly during the morning commute. The new northbound bus lane, now extended from South Walden Street to South Grand Street, addresses that challenge directly.
Transit officials estimate that the project will save riders up to five minutes during peak morning hours. Even under typical conditions, the improvements are expected to shave two minutes off the average trip. The frequent service, with a northbound bus every 3.5 minutes during rush hour, now has the infrastructure to match the schedule.
Key upgrades delivered in the second phase include:
A new northbound red bus-only lane spanning more than two miles, helping buses bypass traffic and maintain reliable service
Upgraded sidewalks and ADA-accessible curb ramps to improve mobility for people of all abilities
Enhanced pedestrian crossings, signals, and street lighting to create safer, more welcoming streets for everyone
The improvements go beyond just transit reliability. For people walking, rolling, or accessing the bus, the project enhances the daily travel experience and improves safety along a corridor that has historically seen high volumes of both pedestrian and vehicle traffic.
City transportation planners worked closely with residents and community organizations throughout Southeast Seattle to ensure the project responded to local needs. Input from neighborhood stakeholders helped guide design priorities and implementation timelines. The result is a more inclusive and functional Rainier Avenue South that better serves its diverse users.
The project also strengthens multimodal connections across South Seattle. The bus lane will improve transfers and accessibility to light rail stations, including the Judkins Park Station, part of Sound Transit’s new Link 2 Line scheduled to open in 2026. It also enhances access to the existing Mount Baker Light Rail Station and the nearby Mount Baker Transit Center, creating a smoother flow between buses and trains.
These improvements are not just about moving people more efficiently. They are also about advancing climate goals and building a more equitable transportation network. Encouraging more reliable and attractive bus service helps reduce dependence on private vehicles, cuts carbon emissions, and ensures that everyone, regardless of income or mobility level, has access to fast and dependable transportation.
The upgrades to Rainier Avenue South also lay the groundwork for future improvements. The corridor is being prepared for the planned RapidRide R Line, which will bring further transit enhancements including more frequent service, upgraded bus stations, and real-time arrival information.