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Yakima Valley Trolley Bridge

Yakima Valley Trolley Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: August 27, 2014

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Key Facts

Facility Carried / Feature Intersected
Railroad (Yakima Valley Trolley Line) Over Naches River
Location
Yakima and Selah: Yakima County, Washington: United States
Structure Type
Metal 5 Panel Pin-Connected Pegram Through Truss, Fixed and Approach Spans: Wood Stringer (Multi-Beam), Fixed
Construction Date and Builder / Engineer
1895 By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
1912
Main Span Length
150 Feet (45.72 Meters)
Structure Length
324 Feet (98.76 Meters)
Roadway Width
Not Available
Spans
2 Main Span(s) and 1 Approach Span(s)
NBI Number
Not Applicable

Historic Significance Rating (HSR)

Bridge Documentation

View Historic American Engineering Record (HAER) Documentation For This Bridge

View Historic Structure Reports For This Bridge

View The Original Pegram Truss Patent

View Historical George Pegram Biography

This bridge is the only example of a Pegram truss bridge in Washington. The Pegram truss was patented by George Pegram and was used in a number of railroad bridges. Today it is an extremely rare truss configuration as very few examples exist nationwide. Pegram trusses are historically and technologically significant as an example of a patented 19th century metal truss bridge configuration.

The bridge was originally built in 1895 by the Union Pacific Railroad in Manhattan, Kansas. In 1912 it was relocated and erected here.

View the Historic Structure Report for a detailed history and discussion of this bridge.

The bridge retains excellent historic integrity with no major alterations to the truss noted.

View this page for more information about Pegram trusses.

This bridge is next to more traditional railroad bridge.

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