Last updated:  May 22, 2017

Three Projects Result from the
Corridor Study

The corridor study described on this page has generated City projects for two of the segments along the 145th Street corridor. These two projects are currently in the design and environmental phase. Please visit the SR-523 (N/NE 145th Street) & I-5 Interchange Project and the SR-523 (N/NE 145th Street) Aurora Avenue N to I-5 Project webpages for additional information on each.

Last November, a third portion of the corridor was approved for Bus Rapid Transit (BRT) as one of the Sound Transit 3 Plan projects. Sound Transit is in very preliminary stages currently assembling a project team. The scheduled completion year for this project is currently 2024. There will be a public outreach process and Shoreline will share information as it becomes available.

Final Corridor Report and Next Steps

The 145th Street Multimodal Corridor Study Final Report has been completed.  In addition to a discussion of the study process, it includes the preferred design concept adopted by Shoreline Council, establishing the vision for improvements along this corridor.  Other significant action for this corridor is the Shoreline Council adoption of the 145th Street Station Subarea Plan on September 26, 2016 which revised zoning in the vicinity of the future light rail station, at 145th Street and I-5, targeting growth in this area.

City staff will continue to work to secure funding for improvements along the 145th corridor.  There is federal funding obligated to begin design for the section from Aurora Ave to I-5 as well as design funding pending for interchange improvements.  Staff are busy conducting the process to hire a design consultant and expect to have a consultant under contract in May 2017.

Shoreline Council Adopts Preferred Design Concept

On April 11, 2016, Shoreline Council adopted the preferred design concept for the 145th Street Multimodal Corridor Study.  The staff report provided background on the year-long study.  After a brief discussion, Council voted unanimously to adopt the concept.  The final corridor report is being finalized and should be made available on this webpage in mid-November 2016.

This has been a long process with many people to thank. Our volunteer Citizen Advisory Task Force (CATF) met ten times during the course of this study.  Partnerships with staff at the Puget Sound Regional Council (PSRC), Washington State Department of Transportation (WSDOT), Seattle DOT, King County Metro, Sound Transit, cities of Kenmore, Lake Forest Park, and Bothell, Cascade Bicycle Club, and other community organizations were critical.  Finally, the interest and input from the community as a whole at open houses helped to successfully guide and move the process forward. 

February 24 Open House

A well-attended third and final open house for the 145th Street Multimodal Corridor Study was held on Wednesday, February 24, 2016 at Shorecrest High School. About 300 people were in attendance to view a draft preferred concept, or vision, for corridor improvements along the 3-mile stretch of 145th Street.

You can view a version of the Presentation (video-taped at the March 3 Planning Commission meeting) and Display Boards for the information that was shared at the open house.

The draft preferred concept is illustrated through a series of sheets showing various treatments along the corridor.  Please look through all sheets to see the various types of improvements which vary significantly from the west to the east end of the corridor. 

September 30 Open House

The second open house for the 145th Street Multimodal Corridor Study was held on Wednesday, September 30. Approximately 200 people attended.  At this open house, City of Shoreline staff shared general information about the study and the project team introduced draft study concepts.  Open house attendees participated in an exercise which will be used to help inform the outcome. The eventual goal of this study will be to recommend a preferred study concept to Shoreline council and stakeholders.

The open house display boards and a video of the presentation are available for viewing.  The slide show presentation is best explained as viewed with commentary in the video.

May 20 Open House

The first open house for the 145th Street Multimodal Corridor Study was held on Wednesday, May 20, 2015. At this open house, attendees were able to view materials about the study process, discuss project goals, and share comments about the current state of the 145th Street corridor.  The next open house is anticipated to be held in late summer when draft alternatives for further study will be shared and comments solicited.

Historical Overview

In early 2015, the City began a year-long process to prepare a corridor study for the 145th Street (SR 523) Corridor. The corridor is a key east-west connection for the region linking bus rapid transit on Aurora, light rail, and I-5. In need of significant upgrades, the corridor study will include development of a master plan for improving pedestrian and bicycle mobility, safety and operations, transit speed and reliability, and freight mobility on the corridor.

A major obstacle to addressing these issues in the past has been the multijurisdictional nature of 145th Street’s location and function. The southern border of the City of Shoreline ends where the northern edge of the sidewalk begins on 145th Street. It is also a state highway (SR 523) from I-5 to Bothell Way NE (SR 522). As the diagram shows, the complex arrangement of ownership and regulatory authority for the roadway includes the City of Seattle, King County, and the Washington State Department of Transportation (WSDOT).

Image showing which government agencies have jurisdiction over 145th Street. 

Shoreline does not own any of the right-of-way but experiences significant traffic and safety issues associated with this street. Traffic volumes on this street are anticipated to increase due to highway tolling on the Lake Washington bridge(s), regional growth, and the future light rail station at NE 145th Street and I-5. As a result, upgrades will be needed to accommodate these volumes, as well as improve safety for bicycles and pedestrians, and speed and reliability for transit. At this time, improvements can only be made by WSDOT, King County, or the City of Seattle; all of which have stated that improvements to 145th Street are not a priority.

The best way to achieve effective multi-modal improvements that address the needs of all users is to implement them corridor wide. However, with the current multi-jurisdictional ownership, it has become clear that the only way improvements to 145th Street will be undertaken in the near future is if ownership is consolidated. Shoreline has been meeting with the City of Seattle, King County, and WSDOT and they are all supportive of Shoreline's efforts to consolidate ownership under the City of Shoreline

Purpose of a Corridor Study

The redevelopment of the 145th Street corridor promises to be a significant and complex capital improvement project in the City of Shoreline.

The study will include development of a master plan for the proposed improvements to the corridor. The study process will evaluate several options for accommodating multiple travel modes, including vehicles, buses, pedestrians, bicyclists, and freight. It will also consider the impacts to property owners associated with potential roadway widening. The process will take into consideration the future location of the light rail station at I-5 and the additional transportation demands created as a result. The interchange at I-5 greatly influences the function of the entire corridor, thus evaluation of improvements at that location will be an important component of the corridor study.

Input from residents, property owners, business owners, community groups, and human service organizations will be important during the process. Over the course of 2015, the City will engage in a rigorous public engagement process seeking such input. The City will conduct a series of open houses that will build upon each other as it develops the study.

 145th Street in need of significant improvements
Image showeing utility pole in the middle of the sidewalk. Image showing a street sign stating walkway not accessible for wheelchair use. Image showing the poor roadway condition.
Some of the many sidewalk impediments Sign clearly states one of the issues Poor condition of roadway


Additional Information:
Partnership for Improvement
145th Street Corridor Study Project Schedule
Other web pages of interest:
Citizen Advisory Task Force (CATF)
145th Street Station Subarea Plan and FEIS