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The Mount Hood Highway No. 26 (see Oregon highways and routes) is the Oregon Department of Transportation's designation for a 93.84-mile〔Oregon Department of Transportation 〕 (151.02 km) highway from Portland east around the south side of Mount Hood and north via Bennett Pass to Hood River. It is marked as U.S. Route 26 from Portland to near Mount Hood and Oregon Route 35 the rest of the way to Hood River. Much of the highway is part of the Mount Hood Scenic Byway, a National Scenic Byway which connects Troutdale with Hood River via the southern flank of Mount Hood. The Byway's route includes parts of present-day U.S. Route 26 and Oregon Route 35 and the historic Barlow Road through the Mount Hood Corridor. It also forms a loop with the Historic Columbia River Highway, an All-American Road. The portion from Sandy to Barlow Pass on the south flank of Mount Hood is aligned to the land portion of the historic Oregon Trail. It was developed in the 1840s as the Barlow Road. == Route description == The highway begins in Portland at the west end of the Ross Island Bridge, with access to the Oswego Highway (Oregon Route 43), Pacific Highway (Interstate 5) and Pacific Highway West (Oregon Route 10). US 26 itself heads west on Arthur Street, which is not a state-maintained Highway, to reach the Stadium Freeway (Interstate 405). After crossing the Willamette River on the Ross Island Bridge, the Highway is locally known as Powell Boulevard through Portland and Gresham. State maintenance ends at the Portland/Gresham border, beginning again where the Highway turns southeast at Burnside Street east of downtown Gresham. Soon after that turn, Highway 26 uses the completed part of the Mount Hood Freeway (built only to surface expressway standards) to Sandy, where it runs through downtown on a one-way couplet. The section of Powell Boulevard from Interstate 205 east into downtown Gresham carries only two lanes. When I-205 was built, the ramps at Powell Boulevard were configured to only allow traffic towards the west, with US 26 east pointed along the four-lane Division Street, about 1/2 mile (1 km) to the north. (Right turns were even banned to and from the I-205 north ramps at first.) Division Street runs east into Gresham, where it meets Burnside Road, at which a right turn to the southeast leads into the Mount Hood Highway and US 26. Despite this signage pointing US 26 east on Division Street, traffic already on US 26 is pointed straight along Powell Boulevard (the Mount Hood Highway), in agreement with ODOT's route description.〔Oregon Department of Transportation, (Digital Video Log )〕〔Oregon Department of Transportation, (Descriptions of US and OR Routes ) (PDF)〕 East of Sandy, the highway is a (mostly) four-lane undivided highway approaching the slopes of Mount Hood; as the highway climbs up towards Government Camp it reduces to two and three lanes. It is four lanes again through Government Camp. East of Government Camp is an interchange with Oregon Route 35, where US 26 heads southeast on the Warm Springs Highway towards Madras and the Mount Hood Highway heads north with Route 35. Route 35 winds over Bennett Pass and around the eastern side of Mount Hood, and descends into the Hood River Valley. The Mount Hood Highway designation ends at the intersection with the Historic Columbia River Highway, which carries U.S. Route 30 to the west. To the north, the road continues as a spur of the Columbia River Highway No. 2 (Interstate 84), bringing US 30 back onto that freeway. Officially Route 35 heads west from there on US 30 through Hood River to end at I-84 west of that town, but all signage ends at the end of the Mount Hood Highway. The general public uses the name ''Mount Hood Highway'' to refer to much the same route, excluding the portions inside Portland and western Gresham (which are referred to by the street name of Powell Boulevard). Between 1955 and 1978, the 15-mile (25 km) segment of the route through southeast Portland was proposed to be moved from Powell Boulevard to a new similar alignment known as the Mount Hood Freeway. Due to intense local opposition, this proposed freeway was cancelled. 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「Mount Hood Highway」の詳細全文を読む スポンサード リンク
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