Toll rates on the SR 99 tunnel set to increase July 1, 2025

Beginning Tuesday, July 1, toll rates for the SR 99 tunnel in Seattle will increase by 3 percent. The Washington State Transportation Commission (WSTC) approved this increase during its May 13 meeting as part of a scheduled rate adjustment plan adopted in 2018. What’s changing: Tolling helps repay the cost to build the tunnel, along […]