Thanks to SeattlePI forum member ‘TCMetro’ for finding this great pdf file regarding RapidRide service in King County. This goes over what routes may or may not become RapidRide BRT routes and changes to current routes that will become RapidRide.
http://mkcclegisearch.metrokc.gov/attachments/26002.pdf
Some Highlights –
The following changes to existing routes are assumed to support the
implementation of RapidRide service (see also Table 1: Transit Now RapidRide
Improvements, page 4):
Aurora Avenue North: Route 358 would be converted to RapidRide
service.
Ballard: Service options would involve combinations of resources
converting some or all of routes 15, 15X, 18, and 18X.
Bellevue-Redmond: Service options would involve combinations of
resources converting some or all of routes 230 and 253.
Highway 99 South: Route 174 would be converted to RapidRide service
between Tukwila/International Boulevard Link station and Federal Way,
and a new local route between Tukwila/International Boulevard Link
Station and downtown Seattle would serve the northern segment of the
current route 174.
West Seattle: Service options would involve combinations of resources
converting some or all of routes 54 and 54X to RapidRide service, and
possible changes to service levels or route structure to routes 55, 56 and
128.