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Smithfield Bridge

Delaware County Bridge 161

Smithfield Bridge

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: September 21, 2012

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Key Facts

Facility Carried / Feature Intersected
CR-170 South Over White River
Smithfield: Delaware County, Indiana: United States
Construction Date and Builder / Engineer
1902 By Builder/Contractor: Indiana Bridge Company of Muncie, Indiana

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
189 Feet (57.6 Meters)
Structure Length
192 Feet (58.5 Meters)
Roadway Width
15.4 Feet (4.69 Meters)
1 Main Span(s)
NBI Number

Historic Significance Rating (HSR)
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Bridge Documentation

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

Constructed in 1902, this bridge is a regionally early example of a highway truss bridge with riveted connections. It also is noted in Indiana for the length of its Warren truss span, which is 192 feet. Visually, the bridge is noted for its lattice portal bracing and sway bracing, which is fairly large, to stabilize the relatively long, deep, and perhaps somewhat massive (for its age) truss.

Information and Findings From DHPA Historic Bridge Survey

Statement of Significance

The longest extant Warren through truss in Indiana is similar in design to Delaware #95 and #152. It retains its original members including latticed portals, struts, and most of its guardrail. This span is unusual for its use of verticals only in alternate panels, the the interchangeability of its portals and struts, and the amount of variation in the sizes and construction of its diagonals. The whole was planned and executed by a prolific Hoosier firm.

Bridge #161 is one of only eleven extant steel through truss highway bridges in Delaware County, and only one of six with a timber deck.

Architectural Description

Seated upon concrete abutments and wingwalls, this all-riveted, single-span Warren through truss extends 192'. I beams fabricated from channels riveted together provide the verticals for the alternate of the twelve panels. Double angles riveted to stay plates start the diagonals from the top chord-endpost point; laced channels extend the pattern of diagonals through the more central panels. Riveted to gussets and vertical plates, I floor beams carry the asphalt-over-timber deck with its 15'5" roadway and 17' of vertical clearance.

The Indiana Bridge Company of Muncie designed and fabricated both the substructure and the truss.

Bridge Considered Historic By Survey: Yes


Photo Galleries and Videos: Smithfield Bridge

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Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing.


Maps and Links: Smithfield Bridge

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