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|direction_b=East |terminus_b= in Newport |previous_type=SR |previous_route=19 |next_type=SR |next_route=21 |tourist=International Selkirk Loop }} State Route 20 (SR 20), also known alternately as the North-Cross Highway or the North Cascades Highway, is a state route in the state of Washington. It travels from an intersection with U.S. Route 101 (US 101) at Discovery Bay near Port Townsend to Newport at a junction with US 2 about from the Idaho state line. Although US 12 has a larger east–west extent, SR 20 is the longest highway in Washington at , only longer than US 12. The highway has been called "The Most Beautiful Mountain Highway in the State of Washington." ==History== What is known today as the North Cascades Highway was originally the corridor used by local Native American tribes as a trading route from Washington's Eastern Plateau country to the Pacific Coast for more than 8,000 years. After the California Gold Rush of 1849, white settlers started to arrive in the North Cascades looking for gold as well as fur-bearing animals. This far north, the settlers needed a clear route through some of the most rugged terrain in Washington Territory. It wasn't until 1895, however, that funding to explore a possible route through the Cascade Range was appropriated. After one year of surveying possible routes in the Upper Skagit River region, the State Road Commission concluded in 1896 that the Skagit gorge was not a practical route. Instead, the commission settled upon the Cascade Pass route, several miles south of the Skagit gorge. The Cascade Pass route began to be roughed out in 1897 and shortly afterward, state highway maps showed the road as either State Highway 1 or the Cascade Wagon Road. In the following years, floods on the Cascade River took out most of the work completed on the road and led Washington's first State Highway Commissioner to report in 1905 that almost all the money appropriated for the road had been wasted. After these unsuccessful attempts to build a northern cross-mountain highway, the state designated that a highway be built along the Methow River from Pateros to Hart's Pass, high above Eastern Washington's Methow Valley. This road was completed in 1909. By 1936, both of Seattle City Light projects, Gorge Dam and Diablo Dam had been completed and were attracting visitors and families to the area. In 1940, the first stage of the completion of Ross Dam was reached. Because this influx of population and interest in the area once again demonstrated the need for a northern route over the high Cascades, highway promoters began to try and persuade other boosters to finally abandon the idea of the ill-fated Cascade Pass route and instead look to agreeing on a route across Rainy and Washington Pass. In 1953, the North Cascades Highway Association was formed with politicians, lobbyists, and business owners from both sides of the North Cascades taking part. As these boosters pushed Olympia harder to move forward on the highway plan, more and more requests for huge sales of old-growth timber from along the highway corridor came in. These increasing timber requests were used to support the need for a highway. Finally, in 1958, the State of Washington appropriated funds to build a highway from the Seattle City Light company town of Diablo to Thunder Arm, a southern arm of Diablo Lake. Funds were also allotted to improve access roads on both sides of the North Cascades and construction on this section of the highway began in 1959. Over the next nine years, construction of the road would continue along with the signing of the North Cascades National Park bill by President Lyndon B. Johnson in 1968. With this bill, the hope of using the highway as access for high-dollar timber sales was quashed. Nonetheless, businessmen and residents on both sides of the North Cascades were hopeful and supportive of the tourist dollars that would be seen with the opening of the "North-Cross Highway". Moreoever, the Methow Valley town of Winthrop, Washington was in the process of transforming itself from a sleepy cow-town into a tourist town with a western-style theme, complete with false-front buildings and boardwalk sidewalks. Finally, in mid-1972, the more-than-a-century-old idea of connecting western Washington with eastern Washington by a northern highway route had come to fruition. Amidst fanfare, music provided by the Concrete High School Band, and ribbon cutting, Highway 20 was officially connected from western to eastern Washington via Washington Pass on September 2, 1972. Then-governor Daniel J. Evans, a host of state dignitaries, and then-President Richard M. Nixon's brother Donald were in attendance for the opening and vehicle procession over the Cascade Mountains.〔(【引用サイトリンク】publisher= Washington State Department of Transportation )〕 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 20」の詳細全文を読む スポンサード リンク
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