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State Route 410 (SR 410, partially named the Chinook Scenic Byway, and also named the Stephen Mather Memorial Parkway) is a long state highway that traverses Pierce, King, and Yakima counties in the US state of Washington. It begins at an interchange with SR 167 in Sumner and travels southeast across the Cascade Range to a junction with U.S. Route 12 (US 12) in Naches. While the western part of SR 410 is a freeway that serves built-up, urban areas, the remainder of the route is a surface road that traverses mostly rural areas as it passes through the mountains. The route starts as a limited-access southerly bypass of Downtown Sumner, but becomes a surface road east of the city. Traveling eastward, the roadway serves Bonney Lake and Buckley, and crosses and eventually parallels the White River into Enumclaw and Greenwater. SR 410 enters the Mount Baker-Snoqualmie National Forest and later heads into Mount Rainier National Park, crossing the Cayuse and Chinook passes, and leaves the park southeast along the American River into Wenatchee National Forest. SR 410 leaves the national forest and travels parallel to the Naches River to end in Naches, a city located west of Yakima. The Chinook Scenic Byway begins in Enumclaw and follows the highway through the two national forests and Mount Rainier National Park to US 12 in Naches. Modern SR 410 was parts of various state wagon roads until 1926 when US 410 was established, extending from Aberdeen to Lewiston, Idaho. US 410 was decommissioned after US 12 was extended over the majority of the highway in 1967, bypassing Olympia and Chinook Pass. A segment of former US 410 from Elma to Olympia became SR 8 and the Tacoma to Naches segment became SR 410. The highway was later shortened to end in Sumner and was replaced by SR 167 from Tacoma to Sumner. ==Route description== SR 410 begins as a freeway at an interchange with SR 167 near Downtown Sumner. The highway travels southeast across suburban areas, crossing the Stuck River and passing a partial cloverleaf interchange with Linden Drive, also named Traffic Avenue. After a second partial cloverleaf interchange with Thompson Avenue, SR 410 goes under a railroad trestle owned by BNSF Railway and used by Amtrak's ''Cascades'' rail service, near the northern bank of the Puyallup River.〔 After turning northeast, SR 410 encounters the western terminus of SR 162 by way of a diamond interchange. SR 162 travels north into Downtown Sumner as Valley Avenue and south over the Puyallup River towards Orting. The freeway section near the interchange was the busiest recorded part of SR 410 in 2008 with a daily average of 59,000 motorists using the freeway. Continuing northeast, SR 410 connects to 166th Avenue and turns southeast as an undivided highway into the community of Bonney Lake. East of Bonney Lake, the roadway heads east, passing two shopping centers before entering Buckley and intersecting SR 165. In Buckley, the street travels northeast through Downtown and turns north to cross the White River and enter King County.〔 After leaving Pierce County, the highway travels northeast through rural areas into Enumclaw and passes Enumclaw High School before turning east and being renamed Roosevelt Avenue.〔 As Roosevelt Avenue, the street intersects Griffin Avenue, also designated SR 164, which travels northwest to SR 169 and Auburn. The roadway, now named the Chinook Scenic Byway, passes by the King County Fairgrounds and Enumclaw King County Park.〔(【引用サイトリンク】title=Enumclaw's King County Fair )〕〔(【引用サイトリンク】title=Enumclaw's King County Fair Directions )〕 Leaving Enumclaw in a southeastern direction, SR 410 begins to parallel the White River upriver into Federation Forest State Park, a state park consisting of old growth evergreen forests. The highway crosses the Greenwater River, northeast of its confluence with the White River, and re-enters Pierce County.〔〔 The bridge ends in the community of Greenwater, named for the river, where the roadway encounters Forest Road 70, which has been proposed to become SR 168 over Naches Pass as an alternative to the Chinook Scenic Byway. From Greenwater, the road travels south alongside the White River into Mount Baker-Snoqualmie National Forest, passing Ranger Creek State Airport, a state-owned airport that is open in the summer and early fall.〔(【引用サイトリンク】title=Ranger Creek State Airport )〕 The byway travels south into Mount Rainier National Park. SR 410 is closed at the gate to Morse Creek, about 5 miles east of the Chinook Pass Summit during the winter and early spring due to high wind, limited cell service and avalanche danger. It intersects SR 123 at Cayuse Pass. SR 410 turns east at the intersection and heads through a series of hairpin turns, passing Tipsoo Lake, to Chinook Pass.〔 Chinook Pass is the border between Pierce and Yakima counties and Mount Rainier National Park and the Wenatchee National Forest.〔 The pass is also where the highway crosses the Pacific Crest Trail, a National Scenic Trail that was completed in 1993.〔(【引用サイトリンク】title=Pacific Crest National Scenic Trail )〕〔(【引用サイトリンク】title=Washington Segment of the Pacific Crest Trail )〕 East of Chinook Pass, the roadway begins to parallel the American River northeast to follow the Little Naches River, which becomes the Naches River.〔 After a junction with the other end of the proposed SR 168, named Little Naches Road, the highway exits the Wenatchee National Forest and enters Naches. The byway ends at US 12 in Naches near the Naches Selah Canal.〔〔 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 410」の詳細全文を読む スポンサード リンク
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