Online Open House: Feb 22nd - April 8th, 2023
sound transit Stride


Stride is coming to you!

This online engagement website shares 60% design plans and updates for the public.

The goal of the Stride bus rapid transit (BRT) program is to provide more convenient and efficient ways for you to get to your destination, with frequent service every day throughout the region.

Watch our short video below for an introduction to Stride BRT

We are hosting public meeting drop-in sessions to share the 60% design plans. Come to your city’s meeting to learn more about the design in your city, ask questions and share your thoughts on future construction.

March 15

Lake Forest Park

3 - 7 p.m.

Brookside Elementary

March 22

Seattle / Shoreline

3 - 7 p.m.

Shoreline Unitarian Universalist Church

March 28


4 - 8 p.m.

Kenmore City Hall     

Sound Transit’s Stride bus rapid transit will be a fast, frequent, and reliable bus service connecting to light rail and to communities north, east, and south of Lake Washington. Similar to light rail service, Stride is designed for convenient travel with fast arrivals and departures, including off-board fare payment and multiple-door entry and exit. New bus lanes and transit priority improvements will help riders avoid traffic. Our Stride bus fleet will include battery electric buses (BEBs) for a cleaner, more sustainable way to travel in the region. Stride routes will replace existing ST Express service currently operated by transit partners. Route 560 will be replaced by S1: I-405 South, Route 535 will be replaced by S2: I-405 North, and Route 522 will be replaced by S3. Stride buses will connect to Link light rail and provide new ways for you to get to your destination. Our Stride program will also include a new bus maintenance base in Bothell to guarantee a safe, clean and comfortable ride for Sound Transit passengers. The S1, S2, and S3 bus lines together form the Stride program.

What are S1 and S2?

The S1 and S2 Stride Lines, formerly known as I-405 bus rapid transit in the project’s planning phase, will connect communities along I-405 and SR 518 from Lynnwood to Burien. S1 runs from Burien to Bellevue and S2 runs from Bellevue to Lynnwood. With buses running as often as every 10 minutes, this new service will connect to Link light rail at Lynnwood, Bellevue and Tukwila, the S3 Stride line in Bothell, and to other transit services provided by Sound Transit, Community Transit and King County Metro. The project includes a new transit center in South Renton and 10 Stride stations, three of which will also add parking, for a total of 1,300 new spaces. The parking at the South Renton Transit Center and at Northeast 44th Street is anticipated to be completed in 2034. The Totem Lake/Kingsgate station in Kirkland is anticipated to be completed in 2035. The S1 and S2 Lines build upon the Washington State Department of Transportation's I-405 Master Plan with roadway improvements for faster travel. We are partnering with WSDOT to design and construct several of the Stride stations along these service lines.

S1 and S2 Lines save on your travel time

Stride saves time during AM peak hour travel times to Bellevue. On the North Line from Lynnwood to Bellevue, ST express currently takes 57 minutes. The S2 line proposed refined project will take between 46 and 51 minutes and with north express toll lanes is will be as fast as 33 to 38 minutes. On the South Line from Burien to Bellevue, ST Express takes about 55 minutes. The S2 line will take an estimated 38 to 42 minutes.

What is S3?

The S3 Stride Line, formerly known as SR 522/NE 145th bus rapid transit, will serve the growing north Lake Washington communities from Shoreline and Seattle to Bothell. The project includes 14 Stride stations. The S3 Line will connect riders to Link light rail at Shoreline South/148th at the west end of the corridor, and at the east end of the corridor to the S2 line in Bothell. S2 and S3 will connect at the SR 522/I-405 Transit Hub with transit service provided by Sound Transit, Community Transit and King County Metro. Stride will add parking in Kenmore and Bothell, anticipated to be complete in 2034, and in Lake Forest Park, anticipated to be complete in 2044. 

The S3 Line will reduce your transit travel time

The Stride S3 line during evening peak traffic times Eastbound from Shoreline to Bothell currently takes about 54 minutes. The S3 line will cut that time down to 39 minutes. In the morning peak times going Westbound from Bothell to Shoreline, it currently takes 59 minutes via transit. S3 will cut that time down to 35 minutes.

Stride Fleet

You can recognize Stride buses by their blue, yellow, and white colors. The Stride branding makes them easy to spot. There will be a fleet of double decker buses on S1 and S2 as well as articulated buses on S3. Stride will also feature a brand new fleet of battery electric buses. See a preview of the bus design below:

The Stride bus design consists of articulated buses that are light blue, dark blue, white, and yellow with Stride branding The Stride bus design consists of double-decker buses that are light blue, dark blue, white, and yellow with Stride branding


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통역이 필요하신 분은 Ver este situio en espanol

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Skip to section — learn about Stride’s latest design plans

The Stride map shows the three lines. The S1 Line from Bellevue to Burien, the S2 line from Lynnwood to Bellevue, and the S3 Line from Shoreline to Bothell. On the map, the transfer hubs and stations are marked.
Click to enlarge


Stride has come a long way since the planning phase

Our projects reach various milestones—30%, 60% and 90% design—during the design phase that are associated with a general level of design "completeness." The 30% design phase was completed in 2021 and 2022, and we are now at 60% design for the Stride program. At final design, the plans are finalized and made ready for construction. 

We anticipate starting construction in 2024/2025 and starting service on some lines as early as 2026/2027.

Included in the 2016 voter-approved Sound Transit 3 measure, the Stride program will provide fast, frequent, and reliable transit service to people living and working along I-405 and SR 522. New Stride connections from Bellevue to Burien, Lynnwood to Bellevue, and Shoreline and Seattle to Bothell build upon Sound Transit’s commitment to equitable, accessible, and affordable transportation. With projected population growth across the Puget Sound, Stride is a 19-hour-a-day service that will meet more people’s transportation needs and connect the region in new and faster ways. There is no need to look at a bus schedule for Stride, since buses come every 10 to 15 minutes. It offers an easy alternative to driving congested roadways, bypassing traffic on I-405 in the Express toll lanes and building Business Access and Transit lanes on SR 522. Stride lines will work with regional partners to provide more service in addition to integrating with Sound Transit Link service. Stride's connections to light rail can take you to a Mariners game or the Sea-Tac Airport and eventually all the way to Everett or Tacoma. S3 stops along the Burke-Gilman Trail, so you can enjoy a scenic walk or bike ride to Stride stations.

In the face of the pandemic and steeply rising cost pressures across the Puget Sound region, the Sound Transit Board of Directors took action in August 2021 to ensure our voter-approved transit expansion program remains affordable.

This critical work addressed an estimated $6.5 billion affordability gap for delivering projects on their previous schedules, due to regional real estate and construction costs driving up future project estimates.

After 17 months of staff and Board discussions and engagement with jurisdictions and stakeholders, the Board adopted a realignment plan on Aug. 5, 2021. Learn more about the Board’s action in our Platform blog post.

Based on current revenue projections and cost estimates, the Board’s adopted plan identifies:

  • 2026/2027 as the timeframe we can afford to begin service on the SR 522/NE 145th BRT project (Stride S3).
  • 2026/2027 as the timeframe we can afford to open service on the south Stride bus rapid transit line from Burien to Bellevue (the S1 Line), and complete construction of the NE 85th Station on the north line.
  • 2026/2027 as the timeframe we can afford to open service on the north line from Bellevue to Lynnwood (the S2 Line). This service date is also coordinated with WSDOT’s I-405, Brickyard to SR 527 Improvement Project.
  • 2034 as the timeframe we can afford to provide additional parking in Kenmore and Bothell.
  • 2044 as the timeframe we can afford to provide parking in Lake Forest Park.
  • 2034 as the timeframe we can afford to provide parking at NE 44th in Renton and the South Renton Transit Center.
  • 2035 as the timeframe we can afford to provide additional parking at Kingsgate in Kirkland.

Project costs are being tracked closely as we work with partner jurisdictions and stakeholders to advance Stride projects. The projects’ ultimate timelines will come into greater focus as we advance project design and property acquisition, including examining cost-saving options.

Our path forward will be shaped by determined efforts to secure expanded funding. Close collaboration with partners will be required to deliver projects as rapidly as possible.

Learn more about the realignment process and increased construction cost estimates at

Sound Transit has completed a State Environmental Policy Act (SEPA) environmental checklist for our Stride projects: I-405 BRT, SR 522 BRT and Bus Base North operation and maintenance facility. Based on the checklist, technical reports and other information, Sound Transit has determined that the Stride projects do not have a probable significant adverse impact on the environment and issued a Determination of Nonsignificance (DNS) for each project.

Sound Transit continues to track project design for changes to the environmental impacts documented in the SEPA process and the potential need for additional evaluation of impacts and mitigation.

Bus Base North SEPA DNS Addendum (Aug. 2021)

Bus Base North SEPA DNS

I-405 SEPA DNS (S1 and S2 Line)

SR 522/NE 145th BRT SEPA DNS (S3 Line)

Thank you for your continuous feedback and comments. Your thoughts help us better understand the communities we serve. Since 2018, we’ve met with approximately 80 community organizations, 130 property owners, and thousands of community members at local events. A few common themes we’ve heard from the public are questions and comments around project timeline, future construction schedule, project design and affects, and station design and locations. Summaries of previous public outreach efforts are available on our project websites within the documents section.

Stride S1 and S2 project documents

Stride S3 project documents

Working with property owners

As the design continues to advance, we are continuing conversations on individual site plans and answering project-related questions. We contacted individual property owners to begin the property acquisition process between September 2021 and February 2023.

The project team has actively engaged with property owners who may be affected by the project since early in the design process. Property owners in Seattle, Shoreline, on the east side of SR 522 in Lake Forest Park, on the west side of SR 522 in Lake Forest Park, Kenmore, and Bothell were invited in phases to discuss how the project may impact their property specifically and to answer project-related questions between January 2020 and August 2021. In-person property owner meetings were shifted to virtual meetings due to social distancing recommendations for COVID-19. Property owners were notified of other opportunities to engage with the project and project information through mail, email and project updates.

In March 2021, the project reached the 30% design milestone and the project team held an online open house and virtual town halls to share the latest design information. Based on feedback from property owners, the route alignment in Lake Forest Park was shifted to the west of SR 522 to minimize the number of property owners that would require relocation.

The project team continues to answer project-related questions from property owners and neighborhood groups and meet with them on request as design refinements progress.

The project team has actively engaged with property owners who may be affected by the project since early in the design process. Property owners were offered meetings if they were affected by the project. Due to the pandemic, property owner engagement meetings were shifted to virtual meetings. The project went through Civil Certification with Sound Transit Board of Directors in June of 2022.

Sound Transit has refined the design of the Stride program to minimize the number of property owners that would require relocation, and the great majority of the properties impacted as part of the program involve only partial acquisitions and temporary construction easements. However, in a small number of cases, a project impact is so great to a particular property that an owner/tenant may be displaced in the process. Should that occur, displaced individuals or businesses are entitled to relocation assistance and payments provided by the Uniform Relocation Assistance and Real Property Acquisitions Policies Act of 1970 (Uniform Act).

Sound Transit will fully inform any person who qualifies as a displaced person of their rights and entitlements to relocation assistance and payments provided by the Uniform Act. Relocation Assistance Advisory Services are available to any displaced person or business. A displaced person or business will be assigned a Relocation Agent from Sound Transit who will be available to discuss the relocation procedures and answer questions.

View this graphic to learn about the steps of the property acquisition process. Sound Transit’s Acquisition and Relocation Handbook provides more information about the relocation process and support.

Stride’s Community Benefits

Saves time and energy by bypassing car traffic along I-405 and SR 522
Expands transit access and connections to diverse and growing communities
Creates new connections to light rail, King County Metro, and Community Transit
Uses the first-ever Sound Transit battery electric buses, reducing air quality impacts
Creates easy and quick boarding with multiple doors and offboard payment
Uses new and existing BAT and Express Toll Lanes to bypass congestion and improve transit reliablity
Provides an alternative to single occupancy vehicles
Includes stations with weather protections and clear signage
Improves pedestrian access to stations

Design Updates

Learn about Stride’s latest design plans for your area

To reach the 60% design milestone, we’ve continued conversations with jurisidictions and communities along the corridor to ensure the project meets jurisdictional code requirements and the needs of residents and riders. We will continue to work with jurisdictions and property owners to refine designs. In each section, you can find design updates and roll plots as they are available.

Throughout the Stride program, there are new changes in design including:

  • Improvements to pedestrian access with new sidewalks and lighting.
  • Sound Transit's first battery electric bus fleet. Charging stations will be added at each terminus for all Stride lines.
  • Over 40 BRT stations total along the S1, S2, and S3 lines. The typical shelter will be 48 feet long and most will have ticket vending machines, ORCA card readers and message signs.
  • Throughout the S3 Line, the design changed to create significantly larger, more accessible stations.

Part of our Stride program is being designed and constructed by our local partner agencies and cities. The Washington State Department of Transportation, the Cities of Bothell, Shoreline, Kirkland, and Renton as well as the University of Washington Bothell are some key partners who are constructing Stride elements. Our partners contribute to the success of the Stride bus rapid transit program.

Bus Base North will add a new bus maintenance and operations building and a parking structure for buses and other vehicles. 30% design is complete and 60% design is underway.

Design includes:

  • A 2.5-acre site within Canyon Park Business Center on 20th Avenue Southeast. 
  • A two-story Administration and Operations building, a Bus Vehicle Maintenance building, Bus Storage and battery electric bus charging facility with employee parking above. 
  • Screening landscape around the facility. 
  • Artwork will be integrated into the facility in locations that are visible by the public.
Rendering of the Bus Base North facility

Rendering of the Bus Base North facility

Map showing the Bus Base North facility location in Bothell off of 20th Avenue Southeast
Click to enlarge

The Bus Base North facility will ensure Stride buses receive regular cleaning and maintenance

Below you will find city-by-city design updates.

S1 Line Design Updates

The S1 line will include one station in Burien at the Burien Transit Center (Southwest 148th Street and First Avenue South).

Design refinements include:

  • Modification of the western island within the transit center for the future Stride station.
  • Roadway improvements to add a bus-only lane along Southwest 148th Street, connecting onto SR 518, for Stride operations.   
Preliminary rendering of the Stride station at the Burien Transit Center

Rendering of a Stride station at the Burien Transit Center

The Tukwila International Boulevard Station (SR 518 and Tukwila International Boulevard) will serve Tukwila and SeaTac. In partnership with WSDOT, the S1 line will include a new freeway Stride station on SR 518. Riders will be able to connect to existing light rail service via a new pedestrian bridge. This will provide an easy transfer for Stride BRT riders looking to travel to the airport or Seattle.

Design refinements include:

  • General refinements to the station design.
  • Advancing utilities and stormwater drainage and electrical lighting at Stride islands.
  • Refining station architecture to include Stride elements.
The existing Tukwila Boulevard Station

The Tukwila Boulevard Station will have Stride station pairs

The S1 line will include two stations in Renton: Northeast 44th Station (I-405 and NE 44th Street) and South Renton Transit Center (Rainer Avenue South and South Grady Way). The NE 44th Stride station will be delivered as a part of the WSDOT Renton to Bellevue project.

Design refinements include:

  • A surface parking lot at the South Renton Transit Center, which will be replaced by a five-level parking garage in the future.
  • Two bus islands encompassed of eight bus bays, most under a canopy cover, serving Sound Transit’s Stride, King County Metro RapidRide and local buses at the South Renton Transit Center.
  • Battery electric bus charging infrastructure for Stride and King County Metro buses at the transit center.
  • A new four-way signalized intersection built on Rainier Avenue South and Hardie Avenue Southwest to support bus operations.
  • Pedestrian safety improvements such as new sidewalks and lighting at the transit center.
  • Construction work done along SR 167 to add bus on-shoulder lanes near the I-405 on-ramps and off-ramps to support Stride operations. 
The Renton Park and Ride where there will be Stride station pairs

The Renton Park & Ride will feature two Stride islands.

The S1 and S2 line will include a Stride station at the Bellevue Transit Center on Northeast 6th Street and 110th Avenue Northeast. Riders will be able to connect to local and express buses, King County Metro RapidRide and Link light rail at the Bellevue downtown station. The north and south Stride lines, S1 and S2, will connect at this station.

Design refinements include:

  • Construction work at the Bellevue Transit Center to prepare for the installation of Stride station elements such as the shelter, pylon, and signage. Pylons are large station markers to help you navigate Stride more easily.
  • Construction work done along 110th Avenue Northeast and Northeast 12th Street to add bus layover bays for Stride. A bus layover bay is an area where buses can stop momentarily before starting their next trip, giving bus operators a break. There will also be battery electric bus charging at the layover.
The Bellevue Transit Center platform with an approaching Sound Transit bus

The Bellevue Transit Center will have a new Stride station

The Stride map shows the S1 Line from Bellevue to Burien On the map, the transfer hubs at the Tukwila International Boulevard and the Bellevue Transit Center and stations are marked.
Click to enlarge

The S1 Line connects communities from Bellevue to Burien

S2 Line Design Updates

The S2 line segment will include two stations in Kirkland: Totem Lake/Kingsgate Station (I-405 and Northeast 128th Street) and the Northeast 85th Station (I-405 and Northeast 85th Street). In conjunction with WSDOT, we’re building the Northeast 85th Street Station.

Design refinements include:

  • A new three-tired interchange at Northeast 85th Street with an inline BRT station on I-405 and access to the Express Toll Lanes.
  • Minor construction and cosmetic work will add the necessary infrastructure for the existing BRT stations and Totem Lake/Kingsgate station to incorporate Stride station elements and bus service. 

The S2 line segment will include one station in Lynnwood at the Lynnwood City Center Station (200th Street Southwest and 48th Avenue West). This Stride station will be adjacent to the future Lynwood Link light rail station, which is currently under construction and will begin service in 2024. This will be the terminus of the S2 Line.

Design refinements include:

  • Construction work done at the existing Lynnwood Transit Center to prepare foundations and tie-ins for two new Stride BRT bus stations (pick-up and drop-off) and a Stride BRT layover bay.
  • Roadway improvements and widening construction work happening on the northbound I-5 on-ramp at Poplar Way, as well as the southbound I-5 on-ramp at 196th/36th Street. This will be to support the Stride operations to and from Lynnwood Transit Center.
Rendering of the Stride station with a platform and riders waiting for buses

Rendering of a Stride station at the future Lynnwood Transit Center

The Stride map shows the S2 Line from Bellevue to Lynnwood. On the map, the transfer hubs at the Lynnwood City Center, SR 522/I-405 Transit Hub, and Bellevue Transit Center as well as the station locations are marked.
Click to enlarge

The S2 Line connect communities from Bellevue to Lynnwood

S3 Line Design Updates

The S3 line segment along Northeast 145th Street includes BRT stations at the Shoreline South/148th light rail station and on Northeast 145th Street at 15th Avenue Northeast and 30th Avenue Northeast. There will also be roadway widening for bus lanes and new sidewalks westbound between 8th Avenue Northeast and 6th Avenue Northeast, and in both directions between approximately 12th Avenue Northeast and 17th Avenue Northeast. Sidewalk upgrades are also associated with the station located at 30th Avenue Northeast.

Design refinements include:

  • Roadway, driveway, and sidewalk/planting strip refinements to reduce property and tree impacts.
  • Utility design and relocation.
  • Design of stormwater management systems.
  • Pavement design and signage.
Seattle-Shoreline 60% Draft Design, November 2022 Rendering of the Shoreline Seattle station with riders at the platforms and buses approaching

Rendering of the Shoreline/Seattle 15th Avenue NE westbound platform

The S3 line segment in Lake Forest Park includes BRT stations on 522 at Northeast 153rd Street, Northeast 165th Street and at Ballinger Way Northeast. The project also includes roadway widening for a bus lane and new sidewalks northbound on SR 522 between just south of Northeast 147th Street and 41st Avenue Northeast.

Design refinements to reduce impacts to property owners include:

  • Repurposing the existing two-way left-turn lane to reduce the project footprint.
  • Adding a sidewalk and planting strip on the east side of SR 522 for safe pedestrian access.
  • Completing a business access and transit (BAT) lane network on Bothell Way to save riders time. BAT lanes are curb lanes used only by buses and right-turning vehicles.
  • Shifting of widening to the west side of SR 522, to greatly reduce the number of homes that could require full acquisitions and relocations on the east side of SR 522.
  • Relocating some utilities from the west side to the east side.
  • Refining widths of sidewalks and planting strips to reduce impacts to trees.

Other design refinements include:

  • Refining design of stormwater infrastructure and utility design.
  • Enhancing the retaining wall designs in partnership with Lake Forest Park and WSDOT to better integrate them into the community.
  • Refining the design of driveways on the east side of SR 522 to create vehicle access and turnarounds.
Lake Forest Park 60% Draft Design, November 2022 Rendering of the Lake Forest Park town center station with riders at the platform and a bus leaving the station

Rendering of the westbound Lake Forest Park Town Center station

The S3 line segment in Kenmore includes three BRT stations on SR 522 at 61st Avenue Northeast, 68th Avenue Northeast, and 73rd Avenue Northeast. This section of the corridor has existing bus lanes so no roadway widening is included as part of this project.

Design refinements include:

  • Utility design and relocation at BRT stations.
  • Stormwater management system improvements.
Kenmore 60% Draft Design, November 2022 Rendering of the Kenmore Station with a bicyclist and other riders waiting for the approaching Stride bus

Rendering of the 61st Ave NE westbound Stride station

The S3 line segment in Bothell will include five stations at 98th Avenue Northeast and Northeast 182nd Street, Northeast 185th Street and 104th Avenue Northeast, UW Bothell/Cascadia College-Beardslee Boulevard, Beardslee Boulevard and Northeast 195th Street, and the SR 522/I-405 Transit Hub. The Transit Hub, connecting S2 and S3, is being designed by Sound Transit and WSDOT that includes a safe and accessible pedestrian connection to the University of Washington Bothell/Cascadia College (UWB/CC) campus and the Sammamish River and North Creek Trails.

See the partner agency project section for more information on the Brickyard and Canyon Park station and design improvements.

Design refinements include:

  • Elimination of right turn pocket on Northeast 185th Street at 104th Avenue Northeast to reduce property impacts.
  • Roadway lane repurposing and slight widening on SR 522 for an eastbound bus lane.
  • Retaining walls along the corridor.
  • Sidewalk improvements.
  • Stormwater management and other utility design improvements.
Rendering of the Bothell Station with a person in a wheel chair, a family, and other riders waiting for the bus

Rendering of the Bothell NE 185th Street & 104th Avenue NE eastbound platform

The Stride map shows the S3 Line from Shoreline to Bothell. On the map, the transfer hubs and stations are marked.
Click to enlarge

The S3 Line connects communities from Shoreline to Bothell

Partner Agency Projects

What are our partners doing to prepare for Stride?

Stride will connect cities surrounding Lake Washington to the regional Sound Transit Link light rail system and to other transit services provided by King County Metro and Community Transit. To prepare for Stride service in the region, Sound Transit is partnering with cities and transit agency parners to improve infrastructure and transit connections.

Travelers on I-405 between Renton and Bellevue experience one of the state’s worst commutes. The I-405 Renton to Bellevue Widening and Express Toll Lanes project includes multimodal transportation and safety improvements to offer more reliable travel choices and keep drivers, transit riders and freight moving.

The Renton to Bellevue project will add new capacity to create a two-lane Express Toll Lane (ETL) system between SR 167 in Renton and Northeast 6th Street in Bellevue. In general, the project will add one new lane in each direction and combine the existing HOV lane with the new lane to create a dual ETL system.

The new ETLs will connect to the existing express toll lane system between Bellevue and Lynnwood, as well as the SR 167 HOT lanes via the I-405/SR 167 Interchange Direct Connector, to create a 40-mile ETL system. This project is designed to improve speeds and trip reliability for all travelers and support the new I-405 Bus Rapid Transit (BRT) line between Lynnwood and Tukwila included in the voter-approved Sound Transit 3 package.

To learn more, please visit the project website.


Rendering of the Northeast 44th Street Interchange as part of the Renton to Bellevue project

The I-405, Brickyard to SR 527 Improvement Project lies primarily in Bothell on I-405, starting just south of the SR 522 interchange and ending at the SR 527 interchange. The communities in this vicinity will see major improvements in added express toll lane capacity, direct access to state highways and improved connections to regional transit service at both the UW Bothell Station (SR 522) and Canyon Park Park- and-Ride (SR 527), integrating corridor investments with Sound Transit’s planned opening of the S2 Line. The Brickyard station in Bothell will be a new transit-only inline Stride station facility to support the Stride S2 line, improving connections to the existing park and ride.

The project will enhance 4.5 miles of the corridor with a focus on both the main project expansion and overall operational improvements. The project will build one new express toll lane in each direction between south of SR 522 and SR 527 (extending the existing dual express toll lane system), widen I-405 through the SR 522 interchange and build direct access ramps to the express toll lanes at SR 522, and build a partial direct access interchange at SR 527 to and from the south connecting to the Canyon Park Park-and-Ride. The project will include additional local roadway improvements, fish barrier corrections, noise walls, and new stormwater facilities.

To learn more, please visit the project website.

Map of the Brickyard to SR 527 Improvement Project


The proposed I-405, Northeast 85th Street Interchange and Inline Station Project is located within the City of Kirkland along Interstate 405 (I-405). In partnership with the City of Kirkland, the project will replace the existing two-level cloverleaf interchange at Northeast 85th Street with a three-level interchange and construct local improvements along Northeast 85th Street and its intersection with 114th Avenue Northeast/ Kirkland Way.

To learn more, please visit the project website.


The City of Shoreline is designing improvements for the SR 523 (N/NE 145th Street) and I-5 interchange including NE 145th Street between 5th Avenue NE and the on- and off-ramps on the west side of I-5. The project will replace the signalized intersections on either side of I-5 with roundabouts and update lane configurations on the bridge over I-5.

The 145th Street and I-5 Interchange Project will improve safety and multimodal access along the 145th Street corridor and help connect to the future Sound Transit Shoreline South/148th Light Rail Station, planned to open in 2024. The interchange improvements will alleviate traffic congestion and enhance transportation mobility, reliability, and safety for all users, including pedestrians, bicyclists, transit, and freight.

To learn more, please visit the project website.



Early pre-construction survey

Your feedback is very important to us as we move towards construction.



Three construction workers talking to a member of the public

During construction, Sound Transit works with the contractor to make sure the neighbors and businesses are aware of upcoming work

Next Steps

Stay informed about Stride

In the upcoming design phase: the project team will:

  • Finalize the design of roadways and sidewalks.
  • Finalize station design and integration of public art.
  • Prepare for construction.
  • Obtain land use, environmental, and construction permits.
  • Continue the property acquisition process.
  • Continue engaging with the public, community groups, businesses, and elected officials to inform about design and construction plans.

If you have questions, please reach out to the project team by email at, or by phone at 206-370-5533. We encourage you to subscribe to our email list to stay tuned for future updates.

Sign up for updates

Join us at our public meetings to receive more updates and provide feedback.

We are hosting public meeting drop-in sessions to share the 60% design plans. Come to your city’s meeting to learn more about the design in your city, ask questions and share your thoughts on future construction.

March 15

Lake Forest Park

3 - 7 p.m.

Brookside Elementary

March 22

Seattle / Shoreline

3 - 7 p.m.

Shoreline Unitarian Universalist Church

March 28


4 - 8 p.m.

Kenmore City Hall     


Want to learn more about Stride? The Stride documents webpage for S1, S2, and S3 has everything from our SEPA analysis, detailed project maps, to Community Engagement Guides. The documents page is a resource for the public to find detailed Stride information.


Sound Transit is committed to being a good neighbor during construction. We will work to manage impacts on surrounding communities by:

  • Maintaining a safe construction site: we fence off construction areas, keep the site tidy, adhere to noise variances, etc.
  • Keeping people moving: we provide safe pedestrian and cyclist routes, shift traffic to accommodate construction impacts, and maintain access to private properties and local neighborhoods.
  • Protecting the environment: we make sure our work does not have negative impacts on the environment.
  • Implementing a business relations program: we provide resources to help businesses prepare for construction such as our business toolkit.
  • Maintain a 24-7 construction telephone hotline: we are available to answer construction questions and hear comments on the project.

Sound Transit may request code variances from cities and agency partners to complete work outside of typical construction hours to progress the overall project.

Project Timeline

Click to enlarge