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Oregon Route 8, also known as Oregon Highway 8, is an Oregon state highway which serves the western suburbs of Portland. The road is locally known as Canyon Road and Tualatin Valley Highway, and travels through the center of the Tualatin Valley. Oregon 8 is located entirely within Washington County. The portion of the route from US 26 to Oregon Route 47 is part of the National Highway System, listed as a principal arterial.〔(Oregon Transportation Map: Washington County. ) Oregon Department of Transportation. Retrieved on December 20, 2009.〕 ==Route description== The eastern terminus of OR 8 is an interchange with U.S. Route 26 (which is, at that point, the Sunset Highway) just west of the Portland city limits and the Washington-Multnomah county line. Initially, it is also known as Canyon Road, since it comes out of the gulch in which the Sunset Highway runs. The official designation, beginning from the eastern terminus, is the Tualatin Valley Highway No. 29 (see Oregon highways and routes).〔()〕 Continuing west, OR 8 enters the suburb of Beaverton, and after its interchange with Oregon Route 217, a freeway, its posted name changes to the Tualatin Valley (TV) Highway at Hocken Avenue. It comes within one block of Oregon Route 10, running parallel but never intersecting, although commuters often use surface streets to change between the highways. TV Highway continues west as an expressway out of Beaverton, through the communities of unincorporated urban Washington County, including Aloha, where it runs right next to chipmaker Intel's facilities. The highway continues into the Hillsboro neighborhoods of Reedville and Witch Hazel, receiving the southern terminus of Cornelius Pass Road at Reedville. It then into the city proper of Hillsboro, running north–south as 10th Street before turning east–west with traffic split into a one-way pair. Westbound traffic runs as Baseline Street and eastbound traffic runs on Oak Street. In downtown Hillsboro it receives the northern terminus of Oregon Route 219, which is 1st Street. After passing through downtown Hillsboro, OR 8 moves westward through the adjoined towns of Cornelius and Forest Grove, passing next to Pacific University. At Cornelius the road is again split into a one-way pair, with westbound traffic running on Adair Street, and eastbound on Baseline. In Forest Grove, it intersects with Oregon Route 47, where it becomes part of the Nehalem Highway No. 102. TV Highway continues as OR 47 south to McMinnville. In downtown Forest Grove the road splits again, with eastbound traffic running on 19th Street, and westbound on Pacific Avenue. West of Forest Grove, OR 8 is known as Gales Creek Road, which is not actually a state highway; after passing though some farmland west of Forest Grove, including the community of Gales Creek, OR 8 reaches its western terminus in an intersection with Oregon Route 6 south of the community of Glenwood. 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「Oregon Route 8」の詳細全文を読む スポンサード リンク
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