Denver & Rio Grande Western Railroad, Provo River Bridge, Spanning Provo River, Orem Vicinity, Orem, Utah County, UT

Significance: The Provo River Bridge is a significant example of a Pratt through-truss bridge and is assumed to be built all of wrought iron. The bridge surveyed was originally one of three spans built in 1884 by the Union Bridge Company of Athens, Pennsylvania. Each of the spans was 165.5 feet in length and the three were designed to carry a narrow gauge railroad across the Green River in Utah. Sixteen years later the railroad converted to standard gauge and dismantled the three span Green River Bridge. The railroad then engaged the Louisville Bridge and Iron Company to shorten the dismantled spans to 82 feet and widen each to accommodate standard gauge tracks. One of these modified trusses was installed across the Price River near Wellington, Utah, in 1901 and then moved again in 1919 to its present site across the Provo River at the mouth of Provo Canyon.
Unprocessed Field note material exists for this structure: FN-7
Survey number: HAER UT-14
Building/structure dates: 1884 Initial Construction
Building/structure dates: 1901 Subsequent Work
Building/structure dates: 1919 Subsequent Work
Building/structure dates: 1969 Subsequent Work