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State Route 285 (SR 285) is a state highway serving Douglas and Chelan counties, located in the U.S. state of Washington. The highway serves Wenatchee and begins at an interchange with State Route 28 (SR 28) in East Wenatchee, crosses the Columbia River on the Senator George Sellar Bridge into Downtown Wenatchee and continues north to end at an interchange with U.S. Route 2 (US 2) and US 97 north of the Wenatchee River in Sunnyslope. The highway originally crossed the Columbia River on an earlier bridge built in 1908. The bridge was signed as part of State Road 7 in 1909 and later State Road 2 (the Sunset Highway) in 1923. The roadway was used by US 10 from 1926 until 1940, when it was re-routed and replaced by an alternate route. US 2 was extended from Idaho into Washington in 1946 and used the bridge until the newer Senator George Sellar Bridge was built to the south in 1950. SR 285 was designated in 1977 after US 2 was routed onto the Richard Odabashian Bridge north of Wenatchee and East Wenatchee. The area around the Senator George Sellar Bridge is being improved by the Washington State Department of Transportation to handle increased traffic. ==Route description== SR 285 begins its long route at a partial cloverleaf interchange with SR 28 west of the Wenatchee Valley Mall in East Wenatchee.〔 The freeway crosses the Columbia River from Douglas County into Wenatchee and Chelan County on the Senator George Sellar Bridge, listed as a part of the National Register of Historic Places. The highway becomes Stevens Street and has a small interchange with Wenatchee Avenue before turning north onto Mission Street. SR 285 serves Downtown Wenatchee and splits into a one-way pair with southbound lanes on Chelan Avenue and northbound lanes staying on Mission Street, passing the Wenatchee branch of the North Central Regional Library at Memorial Park and the Wenatchee Valley Hospital. The one-way pair rejoins the main route,〔 turning north as Miller Street and then northwest as Wenatchee Avenue into West Wenatchee near Wenatchee Confluence State Park. Wenatchee Avenue crosses the Wenatchee River into Sunnyslope and becomes a freeway, intersecting Penny Road and Easy Street in an incomplete diamond interchange before ending at an interchange with US 2 and US 97. The Senator George Sellar Bridge is the busiest section of SR 285, being used by a daily average of 52,000 vehicles in 2011. The southern end of the one-way pair, at the intersection of Chelan Avenue and Mission Street, had a daily average of 22,000 vehicles in 2011. 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 285」の詳細全文を読む スポンサード リンク
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