Promontory Route Railroad Trestles, S.P. Trestle 779.91, One mile southwest of junction of State Highway 83 and Blue Creek, Corinne, Box Elder County, UT
Significance: After its completion in 1869, the Transcontinental Railroad Line required continuous repair and rebuilding. The Southern Pacific Railroad Trestle #1, located on the Engineer Mountain grade west of Corrine, is historically significant as part of this ongoing railroad maintenance program. It was constructed around 1889 to replace an original stone culvert that had filled with silt. During the 1930s, the deteriorated timber-frame east bent of the trestle was replaced with an open brace frame of five vertical piles. A second trestle was built on the drainage in 1938. This one, called Southern Pacific Trestle #2, is larger and spanned a wider and deeper channel. Both trestle #1 and #2 continued in operation until the rail line was abandoned in the 1940s and now are contained within the boundaries of the Golden Spike National Historic Site.
Unprocessed Field note material exists for this structure: N1114
Survey number: HAER UT-64-H
Building/structure dates: ca. 1889 Initial Construction
Building/structure dates: 1938 Subsequent Work