- Transit, toll, or swim.
Via Seattle Transit Blog (emphasis mine):
According to the SR 520 and SR 522 Service Implementation Plan, tolls are expected to increase transit demand by 15-35%. A recent poll suggests that tolls will encourage transit use, with 16% of respondents choosing transit as one of many alternatives to tolls. That figure increases to 22% if both 520 and I-90 were tolled. Currently, 15,000 riders cross the 520 bridge every day. Routes 255 and 271 together provide 4,300 crosslake trips each weekday.