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Foss River Bridge

Drive out to Foss River Bridge, a two-mile round trip from the main road, where you’ll see the only intact pony truss in Washington, erected in the 1950s. From here there’s an option to continue up along the gravel road to a trailhead servicing multiple trails with access to high country lakes.

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Three other pony truss spans, also built in the 1950s, have been altered and moved from their original locations but the Foss River Bridge pony truss remains unaltered since its construction in 1951, and is an excellent surviving example of this bridge truss type. Common before the 1940s, pony truss spans became unpopular because their use was limited to short spans and narrow roadways. Over the years, bridges of this...

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