The B Line is one of six RapidRide lines (routes with some bus rapid transit features) operated by King County Metro in King County, Washington. The B Line began service on October 1, 2011, running between downtown Redmond, Overlake and downtown Bellevue. The line runs mainly via NE 8th Street, 156th Avenue NE, NE 40th Street and 148th Avenue NE. Unlike most of the RapidRide lines, the B Line does not offer scheduled service during late-night and early morning hours. History This corridor was previously served Metro routes 230 and 253 which carried a combined average of 5,070 riders on weekdays during the last month in service. Since the implementation of RapidRide on the corridor, ridership has grown 30 percent and the B Line served an average of 6,600 riders on weekdays in spring 2015. Service All times are estimated headways. References External links B Line website RapidRide website RapidRide Blog King County Metro Bus transportation in Washington (state) Transportation in King County, Washington Transportation in Seattle 2011 establishments in Washington (state) 2011 in transport King County Metro