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Yale vicinity

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Yale Bridge, State Route 503 Spanning Lewis River, Yale, Cowlitz County, WA



B&W Photos

HB1221543
BWPhotos 370404

HB1221544
BWPhotos 370405

HB1221545
BWPhotos 370406

HB1221546
BWPhotos 370407

HB1221547
BWPhotos 370408

HB1221548
BWPhotos 370409

HB1221549
BWPhotos 370410

HB1221550
BWPhotos 370411

HB1221551
BWPhotos 370412

HB1221552
BWPhotos 370413

HB1221553
BWPhotos 370414

HB1221554
BWPhotos 370415


Data Pages


Photo Caption Pages


Item Title


Location
State Route 503 Spanning Lewis River, Yale vicinity, WA

Find maps of Yale, WA


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER WA-87
Unprocessed field note material exists for this structure (N143).
Part of building/structure is in Amboy vicinity, Clark County, WA.
Significance: The Yale Bridge is the only steel short-span suspension bridge in the state, although there are many timber examples. It is rare in the sense that less expensive span types are usually chosen for short crossings but it was built economically, using cost-saving materials and construction techniques. / The Yale Bridge is the only short-span steel suspension structure in Washington. It is rare to find this type of bridge at any location because mathematical calculations in stress analysis made in the course of designing a suspension span were tedious and time consuming. Rarer still is the placing of a suspension bridge in a remote location on what was at the time of construction, in 1932, a county road. But the Yale Bridge was an experiment in designing for economy. Its advanced system of tower main cable connections made erecting the bridge relatively simple and permitted the use of smaller diameter cables.

Subjects
Bridges


Collection
Historic American Engineering Record (Library of Congress)

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