Stride (bus rapid transit)

Stride is a future bus rapid transit (BRT) service managed by Sound Transit in the Seattle metropolitan area of Washington in the United States. It is set to comprise three lines that cover 46 miles (74 km) and 25 stations on Interstate 405 (I-405) and State Route 522 (SR 522) in King and Snohomish counties. The system will primarily serve the Eastside region and is scheduled to open in 2028 and 2029.

The three BRT lines will replace existing Sound Transit Express regional bus routes that were launched by Sound Transit between 1999 and 2002. A network of direct access ramps were constructed on I-405 to connect the existing high-occupancy vehicle lanes (HOV lanes) to new bus stations and flyer stops. Plans to upgrade the express buses into a BRT system emerged as part of long-range planning for the I-405 corridor in the 1990s and was included in Sound Transit plans the following decade.

Funding for the I-405 BRT lines, along with the addition of the SR 522 corridor, was part of the Sound Transit 3 ballot measure that was passed by voters in 2016. The S1 and S2 lines on I-405 will use median stations in the freeway, accessed from the high-occupancy toll lanes (HOT lanes); the S3 Line will have conventional bus lanes and business access and transit lanes. Stride will use battery electric buses on all three lines, served from a new maintenance facility in Bothell.