23rd Avenue Corridor Improvements Project
23rd Avenue is a principal arterial that connects a variety of users to businesses, educational institutions and residences in the Central District and beyond. Approximately 13,400-20,000 vehicles use 23rd Avenue each day. This area also serves high volumes of pedestrians, bike riders, and transit users (approximately 5,800 daily transit riders – the 8th highest ridership in King County). Today, the roadway is in poor condition with hundreds of patches where potholes existed, narrow lanes and no turn lanes, and is bordered in many places by constricted and uneven sidewalks.
A Call for Better Mobility
The condition of the 23rd Avenue corridor creates a poor environment for pedestrians, bike riders, and vehicles. This concern prompted a broader evaluation and community conversation about the needs and opportunities to improve the corridor. Through several grants, SDOT expanded its original plans to only repave along 23rd Avenue (from E John Street to S Jackson Street) to include a larger project area (E Roanoke Street to Rainier Avenue S) and address safety and accessibility interests in other modes of transportation. Guided by Complete Streets guidelines, community input, as well as the near-term needs for bike riders, pedestrians and transit users, as demonstrated in recently updated master plans, SDOT expanded the project’s scope.
The New Roadway – Opportunity for Rechannelization
On streets with 25,000 vehicles per day or fewer, redesigning a street from four lanes to three can reduce collisions, reduce speeding, allow vehicles to turn without blocking traffic, manage drivers cutting in and out of lanes, create space for wider sidewalks, make streets easier to cross, and make it easier for freight and transit to travel. To balance the needs of users in the area, SDOT proposes to reconfigure 23rd Avenue between E John Street and Rainier Avenue S (Phases 1 and 2) from the current four lanes (two lanes in each direction) to three lanes (one lane in each direction and a center turn lane). The roadway will remain in the four-lane configuration at key intersections in phases 1 and 2, as well as between E Roanoke Street and E John Street (Phase 3). The corridor revisions aim to balance safety, mobility, and reliability needs for a variety of users in the area, as well as enhance the local community and natural environment. Traffic analysis completed to date shows that additional travel time for vehicles is expected to be approximately two to three additional minutes.
After previous analysis of a protected bike lane (also called a “cycle track”) on 23rd Avenue, and review and discussion with key stakeholders, SDOT will not include a protected bike lane on 23rd Avenue. This is primarily due to safety and traffic flow concerns. Instead, routes for a greenway are being considered. Designating a parallel greenway improves pedestrian and bike rider safety in the area, and provides a safer option to navigate through neighborhoods as compared to the busy 23rd Avenue arterial.
The project is separated into three phases:
Each phase will include:
Phase 1 (E John Street to S Jackson Street)
Phase 2 (S Jackson Street to Rainier Avenue S)
Phase 3 (E Roanoke Street to E John Street)
SDOT is committed to engaging with the community and understanding the needs in the project area. Another public meeting will be held around the 60 percent design milestone, where the project team will be able to share the latest design and provide schedule updates.
As the project scope and geographic limits has evolved, so too have the outreach efforts. Previously, project outreach was limited to the relatively small re-paving project (Phase 1 area) and has since expanded to include all three phases of the corridor improvement project. To date, the project team has:
The project team will continue to work with key stakeholders including neighborhood, business, and advisory groups as design is refined and construction details become available.
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The project is being funded by a number of sources – local, state and federal. To date, the City of Seattle has allocated $45 million for improvements to the corridor.
Questions or Comments?
If you need this information translated, please call (206) 733-9990.