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Long Judson Road Bridge

   


Long Judson Road Bridge

Primary Photographer(s): Rick McOmber

Bridge Documented: July 15, 2007
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Key Facts

Facility Carried / Feature Intersected
Long Judson Road (TR-79A) Over Beaver Creek
Location
Rural: Wood County, Ohio
Construction Date and Builder / Engineer
1916 By Builder/Contractor: Elkhart Bridge and Iron Company of Elkhart, Indiana and Engineer/Design: R. M. Strohl

Technical Facts

Rehabilitation Date
1987
Main Span Length
102 Feet (31.1 Meters)
Structure Length
105 Feet (32 Meters)
Roadway Width
16 Feet (4.9 Meters)
Spans
1 Main Span(s)
NBI Number
8745625

Historic Significance Rating (HSR)

Bridge Documentation

View Archived National Bridge Inventory Report - Has Additional Details and Evaluation

With a length of over 100 feet, this is a very long pony truss span. The visual result of that fact is a very tall and impressive pony truss bridge.  The bridge is composed of built-up beams although there is no lattice or v-lacing except under the top chord and end post which is v-laced. The bridge is a rare surviving example of a bridge built by the Elkhart Bridge and Iron Company. Original railings do not remain on the bridge and have been replaced by Armco guardrails which are not properly mounted so as  to protect the superstructure from collision damage. Properly mounted guardrails is essential not only to preserve the historic bridge, but also to ensure maximum bridge safety.

This bridge is also a relatively early polygonal Warren pony truss, since most Warren truss bridges with a polygonal top chord date to 1920 and later.

Information and Findings From Ohio's Historic Bridge Inventory

Setting/Context

The bridge carries a 2 lane road over a stream in a sparsely developed, rural setting.

Physical Description

The 6-panel, 105'-long, riveted Parker pony truss bridge is supported on concrete abutments. The members are built up. The flooring system was replaced/modified using what appears to be salvaged material in 1987. There are no innovative or distinctive details.

Integrity

The riveted Parker pony truss bridge was designed by R. M. Strohl (plans undated) and fabricated by the Elkhart Bridge & Iron Co. (shop drawings dated 1916).

Summary of Significance

The Parker thru truss bridge was built in 1916 and is a later example of what was by 1916 a very common bridge type and design. The bridge is traditionally composed and exhibits no innovative or distinctive details, other than some detailing at the gusset plates which is equally well represented by longer and/or earlier bridges. It is representative of a bridge type and design as well as methods of fabrication that had been used for span lengths greater than 100' since the last quarter of the 19th century.

Camelback and Parker trusses are members of the Pratt-family of trusses with sloped top chords Technologically, Camelback and Parker trusses differ only in the number of top chord slopes (Camelbacks have exactly five slopes, and Parkers have more than five slopes.) The sloped-chord trusses provide the greatest depth at midspan where it is needed to accommodate the stresses, meaning that less material is needed in their construction as compared to a parallel chord truss of similar span, but fabrication is made more difficult due to the varying lengths of the members. The sloped-chord trusses are often associated with longer spans where the savings in material is great enough to be worth the additional fabrication costs. The practice of sloping the top chords dates to at least the 1840s and appeared early in the development of metal trusses. As with other truss designs, pin connections were used from the 1870s to 1900s, and mostly phased out during the 1910s. Rivet connections were being used by the early 1900s and were prevalent from the 1910s to 1940s. Standardized rivet-connected Camelback and Parker designs were used by many state highway departments, including the Ohio State Highway Department. There are 23 trusses (8 Camelback, 15 Parker) in the Ohio inventory (Phase 1A, 2008).

Bridge Considered Historic By Survey: No

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