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SR 99 Targeted Corridor Study

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WSDOT is developing a plan to identify near-and medium-term transportation improvements for the State Route 99 (SR 99) corridor from 168thStreet Southwest to Airport Road.

SR 99 in unincorporated Snohomish County is a heavily traveled corridor that serves as a major north-south alternative to I-5, and links Lynnwood, Everett, and other growing communities in Snohomish County. Community Transit operates the Swift Blue Line Bus Rapid Transit service along the corridor, which provides high frequency bus service between Shoreline and Everett, and additional transit improvements are being planned along the corridor.

WSDOT is also developing a project along SR 99 from 148th Street to Airport Road that will convert the outside shoulders to Business Access Transit (BAT) Lanes. BAT lanes are curb lanes used only by right-turning vehicles and buses. They help buses move more efficiently through traffic and provide better access to businesses. The project will also consider active transportation and multi-modal safety improvements. Your feedback will help to inform the scope of this project.

An image showing the limits of the study corridor
SR 99 study corridor limits

How to participate

Please review the materials included in this online open house and share your concerns and preferences with us. Your feedback will help clarify the community vision for the corridor and help us develop strategies for improvement. 

Title VI Notice to Public

WSDOT ensures full compliance with Title VI of the Civil Rights Act of 1964 by prohibiting discrimination against any person on the basis of race, color, national origin or sex in the provision of benefits and services resulting from its federally assisted programs and activities. For additional information regarding WSDOT’s Title VI Program, contact the Department’s Title VI Coordinator at 360-705-7098.

Americans with Disabilities Act (ADA) Information

This material can be made available in an alternate format by emailing the Office of Equal Opportunity at or by calling toll free, 855-362-4ADA (4232). Persons who are deaf or hard of hearing may make a request by calling the Washington State Relay at 711.