Courtesy of Sound Transit

The Sound Transit board has selected the route, station locations, and roadway improvements for its Stride bus rapid transit (BRT) on Interstate 405 and State Route 522/Northeast 145th, with Stride BRT lines scheduled to open in 2026 and 2027, according to Sound Transit news release.

Stride BRT will include three lines: S1, which is the south section of 1-405 from Burien to Bellevue, with service scheduled to begin in 2026; S2, the section of I-405 from Bellevue to Lynnwood, with service scheduled to begin in 2027; and S3, SR 522/145th from Shoreline to Bothell, with service scheduled to begin in 2026. 

“With its fast, frequent and reliable service, Stride BRT will connect and unlock opportunity for the many thousands who live, work, learn, and visit our dynamic and growing Eastside cities,” Claudia Balducci, Sound Transit system expansion committee chair and King County Council chair, said in the release. “This action sets Stride BRT on course for its next phase of project development that will bring this much-needed service online in 2026 and 2027.”

Sound Transit CEO Peter Rogoff added, “Stride BRT will not only improve transit commutes for many thousands of riders on the I-405 and SR 522 corridors but connect seamlessly to Link light rail at four separate stations and to local bus services. Our work to expedite these improvements will include close collaboration with WSDOT, our regional transit partners and the many cities along the Stride routes.”  

The Stride S1 and S2 lines will operate along a 37-mile corridor, primarily in the I-405 express toll lanes from Bothell to Renton, with additional routing on general purpose lanes of Interstate 5, State Route 518, and local streets in Burien, Renton, and Lynnwood. The two lines will have a combined 11 stations across eight cities, with a transfer point at the Bellevue Transit Center. Passengers will be able to transfer to Link light rail at Tukwila, Bellevue, and Lynnwood, as well as to the Stride S3 line at a new transit hub in Bothell, the release said.

The 11 stations include Burien Transit Center; Tukwila International Boulevard, connection to Link; South Renton Transit Center; Northeast 44th; Bellevue Transit Center, Stride S1/S2 transfer point and connection to Link; Northeast 85th; Totem Lake/Kingsgate; Brickyard; SR 522/I-405 Transit Hub, connection to Stride S3; Canyon Park; and Lynnwood City Center, connection to Link.

The project includes expanded parking at the existing Kingsgate Park and Ride, scheduled for 2035; new parking at Northeast 44th, scheduled for 2034; and new parking at South Renton Transit Center, scheduled for 2034. 

The Stride S3 line will operate along a nine-mile corridor between the Shoreline South/148th Link light rail station and the SR 522/I-405 transit hub, with separate connecting service options to Woodinville. Buses will use business access and transit (BAT) lanes on SR 522, and BAT lanes, general purpose lanes, and bus queue bypass lanes on State Route 523/Northeast 145th Street. 

There will be 12 stations across five cities, including NE 145th Street at 15th Avenue NE; NE 145th Street at 30th Avenue NE; SR 522 at NE 153rd Street; SR 522 at NE 165th Street; SR 522 at Ballinger Way; SR 522 at 61st Avenue NE; SR 522 at 68th Avenue NE; SR 522 at 73rd Avenue NE/Kenmore Park and Ride; 98th Avenue NE at NE 182nd Street; NE 185th Street at 104th Avenue NE; Beardslee Boulevard at University of Washington Bothell/Cascadia College; Beardslee Boulevard at NE 195th Street.

Roadway improvements, including sidewalk improvements where roadways are widened, will be made in Shoreline/Seattle, Lake Forest Park, and Bothell.

To expedite the opening of the new Stride lines, three planned park-and-ride facilities are scheduled to be opened later, according to the release: new parking at the Lake Forest Park Town Center, scheduled for 2044; additional parking at the Kenmore park-and-ride lot, potentially delivered by King County Metro, scheduled for 2034; and new parking in downtown Bothell, scheduled for 2034.

The Sound Transit board selected the BRT Maintenance base project to be built in August 2021. The facility will be located in Bothell on the east side of 20th Avenue Southeast, just south of 214th Street Southeast in the Canyon Park business park, Sound Transit said.