 state route 900 is a state highway in the state of washington, usa, getting its number as the westernmost spur of interstate 90. it extends 16.20 miles (26.07&nbsp;km) from i-5 in tukwila east to i-90 in issaquah. ==route description== sr 900 begins at the intersection with ryan way at i-5 exit 157, in tukwila near the southeast corner of boeing field. it heads south on martin luther king jr. way (formerly empire way), with ramps to and from i-5, before splitting from the alignment of i-5 and heading east through skyway into renton. it heads into downtown renton on sunset boulevard. at state route 167, a one-way pair begins, with eastbound sr 900 on third street and westbound sr 900 on second street. at state route 515, sr 900 heads northeast on houser way (eastbound) and bronson way (westbound), and after a block sr 900 east turns north on mill avenue to rejoin the westbound side on bronson way. just before bronson way crosses under i-405, sr 900 turns north along the west-side frontage road, sunset boulevard. sunset crosses to the east side of i-405 and then turns east, however sr 900 enters i-405 for a one mile (2&nbsp;km) overlap, exiting once again at park ave n. sr 900 turns east onto park ave n, which again becomes ne sunset blvd, taking sr 900 between the slopes of cougar mountain and squak mountain to its end at i-90 in issaquah (though the name changes to 
State_highways_in_Washington_(state) Streets_and_roads_named_after_Martin_Luther_King,_Jr. Transportation_in_King_County,_Washington