page_title: Yale Bridge
section_title: External links
hierarchical_section_title: Yale Bridge / External links
caption_attribution_description: English: Yale Bridge, State Route 503 Spanning Lewis River, Yale vicinity (Cowlitz County, Washington) Also in Clark County This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information. Creator: U.S. Department of the Interior, National Park Service, Historic American Engineering Record. Survey number HAER WA0438DLC/PP-1-3 Source: U.S. Library of Congress, Prints and Photographs Division, "Built in America" Collection. Copyright: "The original measured drawings and most of the photographs and data pages in HABS/HAER/HALS were created for the U.S. Government and are considered to be in the public domain." Object location45°&#160;57′&#160;40″&#160;N, 122°&#160;22′&#160;18″&#160;W&#160;View this and other nearby images on: OpenStreetMap - Google Earth
context_page_description: The Yale Bridge or Lewis River Bridge spans the Lewis River near Yale, Washington. It was built in 1932 by Cowlitz and Clark counties. The suspension bridge has a clear span of 300 feet, with a total length of 532 feet, replacing a previous steel truss bridge at the site. Construction of the Ariel Dam had created Lake Merwin with a water depth of 90 feet at the site, requiring a new bridge that did not need to have support piers in the water. The road deck, stiffened by a steel Warren truss, is 50 feet above the high water line of the reservoir.
  The bridge was designed by Harold H. Gilbert of the Washington State Highway Department, and was constructed by the Gilpin Construction Company of Portland, Oregon. The only short-span steel suspension bridge in Washington, the bridge incorporates unique features. Only the central span is slung from the cables, with separate unloaded cables acting as backstays running from the 88.75-foot tall towers to concrete anchorages in the canyon's rocky sides. The approach spans were originally supported from below by a timber structure.
context_section_description: Media related to Yale Bridge at Wikimedia Commons
  Yale Bridge at the Historic American Engineering Record, 12 B&W photos, 11 data pages, 1 photo caption page
  Yale Bridge at Clark County, Washington
caption: Yale Bridge
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