State Route 900 | ||||
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Map of King County in western Washington with SR 900 highlighted in red
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Route information | ||||
Auxiliary route of I‑90 | ||||
Defined by RCW 47.17.825 | ||||
Maintained by WSDOT | ||||
Length: | 16.20 mi (26.07 km) | |||
Existed: | 1964 – present | |||
Major junctions | ||||
West end: | I‑5 in Tukwila | |||
SR 167 in Renton I‑405 / SR 169 in Renton |
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East end: | I‑90 in Issaquah | |||
Location | ||||
Counties: | King | |||
Highway system | ||||
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State Route 900 (SR 900) is a 16.20-mile-long (26.07 km) state highway serving suburban King County, Washington. It travels east from an interchange with Interstate 5 (I-5) in northern Tukwila through the city of Renton and into the Issaquah Alps to reach the city of Issaquah, where the highway ends at an interchange with I-90.
SR 900 begins as an extension of Martin Luther King Jr. Way South at an intersection with Boeing Access Road, east of its interchange with I-5 under an elevated section of the Central Link light rail line, in the Allentown neighborhood of northern Tukwila. The four-lane highway splits at a basketweave interchange with I-5, with the southbound lanes of SR 900 traveling over the freeway twice. The roadway continues southeast into Skyway whilst parallel to I-5 and the BNSF South Seattle railyard. SR 900 turns east and becomes Sunset Boulevard as it enters Renton, following the Black River and a BNSF branch railroad, to an intersection with SR 167 at Rainier Avenue.