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Washington State Route 308 : ウィキペディア英語版 | Washington State Route 308
State Route 308 (SR 308) is a state highway in the U.S. state of Washington, serving the community of Keyport in Kitsap County. The highway travels generally east from an interchange with SR 3 east of Naval Base Kitsap at Bangor to the main entrance of the Naval Undersea Warfare Center in Keyport. SR 308 was codified as the Keyport branch of State Road 21 in 1929 and continued as the Keyport branch of Primary State Highway 21 (PSH 21) in 1937. During the 1964 highway renumbering, the branch became a section of SR 303, which ran from Bremerton to Bangor and had a spur route serving Keyport. SR 308 was established in 1971 along the old route of SR 303 Spur and was extended in 1991 to the SR 3 freeway after SR 303 was re-routed onto a new freeway in Silverdale. ==Route description==
SR 308 begins as Luoto Road at a diamond interchange with SR 3 east of Naval Base Kitsap at Bangor. The highway travels east through wooded land, intersecting several minor roads until the roadway turns northeast and crosses over Liberty Bay into the unincorporated community of Keyport. Within Keyport, SR 308 passes the Naval Undersea Museum and serves as the main thoroughfare through the community before it ends at the main entrance to the Naval Undersea Warfare Center, continuing east as Strom Avenue into the base. Every year, the Washington State Department of Transportation (WSDOT) conducts a series of surveys on its highways in the state to measure traffic volume. This is expressed in terms of average annual daily traffic (AADT), which is a measure of traffic volume for any average day of the year. In 2011, WSDOT calculated that the busiest section of the highway was between SR 3 and Liberty Bay, serving 11,000 vehicles, while the least busy section was the bridge over Liberty Bay, serving 6,300 vehicles.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Washington State Route 308」の詳細全文を読む
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