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State Route 397 (SR 397) is a state highway in Benton and Frankin counties, in the U.S. state of Washington. It extends from Interstate 82 east towards Piert Road in Finley before going north on the Cable Bridge over the Columbia River, to Interstate 182 (I-182), U.S. Route 12 (US 12), and US 395 in Pasco. The route serves as a connector between Finley, Kennewick, and Pasco. The road that SR 397 uses, Chemical Drive, continues for east from Piert Road/SR 397 to South Piert Road. SR 397 was approved by the Washington State Legislature in 1991, about shorter. Even though SR 397 was approved by the Washington State Legislature and the Washington State Department of Transportation (WSDOT) in 1991, no signs went up until the law that made SR 397 took effect on April 1, 1992.〔 Later in 1993, the Legislature extended SR 397 to its current southern end. WSDOT and Benton County are currently constructing a connection between I-82 and US 395 and SR 397, dubbed the I-82 to SR 397 Intertie, officially County Route 397 by WSDOT and the Transportation Improvement Board, which is a bypass through the eastern area of the Horse Heaven Hills, located west of SR 397, I-82, and US 395. The road, when completed, will start at I-82/US 395 south of Kennewick, and is expected to go northeast and then curve southeast and then eastward into Finley and onto SR 397.〔(【引用サイトリンク】title=Kennewick – Finley Rural Planning Area )〕 ==Route description== SR 397 runs 24.6 miles from Interstate 82 in central Benton Country east to Piert Road in Finley, then north towards the Columbia River and over the Cable Bridge to Interstate 182 (I-182), U.S. Route 12 (US 12), and US 395 in Pasco. The route links Finley, Kennewick, and Pasco to each other and Interstate 82 heading towards Oregon. WSDOT has found that about 18,000 motorists utilize the road daily before the intersection with West Ainsworth Street and South Tenth Avenue in Finley based on average annual daily traffic (AADT) data. SR 397's newest section goes east through the Horse Heaven Hills south of the Tri-Cities from Interstate 82 and US 395 to South Piert Road to create an easier route for truckers traveling between I-82 and the Finley Chemical Plant. This section of SR 397 was added to the Washington State Highway system in 2009. SR 397 starts at Interstate 82, running eastward towards an intersection with Olympia Street in the hills south of Kennewick. It curves towards the south while still heading east and turns into Finley Road before turning towards the northeast. When it arrives at South Piert Road, SR 397 goes west and crosses the railroad tracks of a railroad operated by the BNSF Railway, and then turns northwest, paralleling the railroad into Downtown Finley.〔(【引用サイトリンク】title=Railroad Contacts in Washington State )〕 After entering Downtown, the road stops paralleling the railroad for about to intersect East Bowles Road and South Haney Road, before then returns to paralleling the railroad. The highway continues northwest to intersect East Perkins Road and East Bryson Brown Road, before north and crossing another railroad, part of the Union Pacific Railroad.〔〔 From the crossing, SR 397 travels between the two railroads into Kennewick.〔 In Kennewick, the road goes north and intersects East Columbia Drive, which goes west to SR 240 and US 395, and then goes onto the Cable Bridge over the Columbia River into Pasco and Franklin County. After getting off of the Cable Bridge, the highway goes east as Ainsworth Street and again crosses BNSF Railway,〔 before turning north and crossing the BNSF Railway twice.〔 After crossing the railroads, SR 397 goes into Downtown Pasco and then the highway ends at a cloverleaf interchange with I-182, US 12, and US 395.〔 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 397」の詳細全文を読む スポンサード リンク
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