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Healdsburg Railroad Bridge

Healdsburg Railroad Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: April 8, 2013

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Key Facts

Facility Carried / Feature Intersected
Railroad (Northwestern Pacific) Over Russian River
Location
Healdsburg: Sonoma County, California: United States
Structure Type
Metal 7 Panel Pin-Connected Camelback Through Truss, Fixed and Approach Spans: Metal 4 Panel Rivet-Connected Pratt Through Truss, Fixed
Construction Date and Builder / Engineer
1921 By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
181 Feet (55.17 Meters)
Structure Length
375 Feet (114.3 Meters)
Roadway Width
Not Available
Spans
1 Main Span(s)
NBI Number
Not Applicable

Historic Significance Rating (HSR)

Bridge Documentation

This railroad bridge has three truss spans, one a lightweight looking span that is a rare example of a Camelback truss and which has pinned connections, while the other two spans are more heavy looking and shorter spans that have riveted connections and due to the number of panels they have could be called Pratt or Warren trusses. East of these is a series of short wooden spans. The Warren truss spans have 1921 cut into their portal braces indicating when they were built. It is not known if the Camelback span also dates to 1921 or if it is an older span relocated here from someplace else in 1921. Its somewhat lightweight construction compared to the shorter, heavier spans suggests it could be older than 1921, as does the use of pin-connections which on railroad bridges were normally used for only large spans by 1921. If this Camelback span does date to 1921, it is a late example of its type.

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