Washington State Route 168
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| Route information | ||||
| Auxiliary route of SR 410 | ||||
| Defined by RCW 47.17.335 | ||||
| History: | Proposed since 1930s Codified since 1970 |
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| Major junctions | ||||
| North end: |
 SR 410 in Greenwater
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| South end: |
SR 410 near Cliffdell
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| Highway system | ||||
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State Route 168 (SR 168) is a legislated, but not constructed, state highway located in Washington, United States. The highway is meant to serve as an alternate crossing through the Cascade Range, supplementing the seasonal Chinook Pass on SR 410. Proposals were first drawn in the 1930s, and the highway has been codified in law under its current designation since 1970, however no construction has occurred.
The highway is legislated to begin in Greenwater, in Pierce County, at a junction with SR 410. The road would continue east through Mount Baker-Snoqualmie National Forest, Naches Pass, and Wenatchee National Forest to its eastern terminus with SR 410 north of Cliffdell, in Yakima County. The highway would pass near Pyramid Peak, which has a maximum altitude of 5,718 ft (1,743 m). Currently, a crossing similar to the legislated highway is covered by a variety of Forest Routes, including Road 19 and Road 70.
Two main reasons for creating the highway exist. First, SR 168 would be an all-season route through Naches Pass (elevation 4,923 feet (1,501 m)). SR 410 closes annually due to avalanche dangers near Chinook Pass (elevation 5,430 feet (1,655 m)). Second, SR 168 would allow commercial vehicles to bypass Mount Rainier National Park, where they are prohibited on SR 410. The current restriction detours commercial traffic south to U.S. Route 12 over White Pass or north to Interstate 90 over Snoqualmie Pass.
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