Vancouver-Portland Interstate Bridge, Interstate Route 5 Spanning Columbia River, Vancouver, Clark County, WA

Significance: The original 1917 bridge represented an enormous financial and engineering accomplishment, shared by the counties of two states. It was designed by the renowned engineering firm Waddell & Harrington, leaders in the field of vertical lift bridge design in the twentieth century. The 1958 bridge was built as a twin structure to the original. The piers of this bridge were assembled from hollow precast segments, a (then) recently patented technique.

Unprocessed Field note material exists for this structure: N142

Survey number: HAER WA-86

Building/structure dates: 1916 Initial Construction

vehicular bridges pedestrian bridges clark county vancouver portland interstate bridge vancouver portland interstate bridge interstate route columbia columbia river vancouver washington state historic american engineering record karl w stumpf photo ultra high resolution high resolution assembly plants manufacturing plants library of congress

1969 - 1980

Library of Congress

http://www.loc.gov/

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