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Houck Iron Bridge

Putnam County Bridge 146 - Grey Bridge

Houck Iron Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: May 19, 2016

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Location
Delphi: Carroll County, Indiana: United States
Construction Date and Builder / Engineer
1913 By Builder/Contractor: Vincennes Bridge Company of Vincennes, Indiana
Rehabilitation Date
2014
Main Span Length
160.0 Feet (48.8 Meters)
Structure Length
162.0 Feet (49.4 Meters)
Roadway Width
15.4 Feet (4.69 Meters)
Spans
1 Main Span(s)
Inventory Number
Not Applicable

Historic Significance Rating (HSR)
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Bridge Documentation

View This Relocated Historic Bridge's Page In Its Previous Putnam County Location Here

View The Official Wabash and Erie Canal Webpage

This long-span pin-connected Pratt truss noted for its tall, impressive trusses has been relocated and preserved here in Delphi, which is noted for its impressive collection of relocated and preserved historic truss bridges.

Information and Findings From DHPA Historic Bridge Survey

Statement of Significance

These long trusses are quite high and their verticals substantial. Otherwise, their design is rather conventional. The bridge retains its original members, including latticed guardrails.

Architectural Description

Seated upon concrete abutments and wingwalls, this pin-connected Pratt through span extends 162' in ten panels. A pair of laced and heavy channels (lightest in the outer panel) provides all of the verticals, a pair of die-forged eyebars serves as the diagonal sets, and cylindrical rods with turnbuckles counter the diagonals in the six most central panels. The I floor beams are bolted to pin plates. The bridge carries a timber deck with a 15'9" roadway and 24'6" of vertical clearance.

Other Information

The campaign for "Good Roads" which started in the last decades of the nineteenth century and gained considerable momentum in the early twentieth, led residents of Putnam county to increasingly petition their commissioners for road improvement. Where a road project required the building of a bridge as well as culverts, the commissioners began by the second decade of the twentieth century to weave bridge construction into road-building contracts. In such cases, savvy bidders would have negotiated a price (tentative subcontract) for the required superstructure(s) with a fabricator while calculating the cost of constructing themselves the concrete bridge abutments and culverts along with the road work. The practice of incorporating bridge with road- building contracts came to dominate metal-truss construction in the county from 1910 to 1930. The Houck and the Pinhook Bridges (#139) are like twins having been conceived in 1911, funded in 1912 as part of road projects, and raised in place in 1913. Back-to-back petitions for improved roads in northern Greencastle township led to awards made to prominent local contractors on the same day about a year later. Allen Hurst and Sweet won the contract for the E. E. Black road work with the Pinhook Bridge, and A. M. Lisby and Masten secured the nod for the Ellis Wright road improvement with the Houck Bridge. The Vincennes Bridge Company of Vincennes, Indiana, made most of the long-span superstructures in the county under these road projects. Ellis Wright was joined by 101 others in his petition of 8 May 1911 for "grading, draining, bridging and macadamizing" the road. In June the commissioners appointed A. A. Lane, the county surveyor, and A. J. Owen and John Randolph to assess the proposed improvement. Receiving the viewers report in early June 1912, which estimated the cost of improvement at $13,280.18, the commissioners ordered a letting at the end of the month. Of the seven bids received, commissioners accepted the Lisby and Masten one (for a gravel road) as "the lowest and best." Construction went on under the eye of surveyor A. A. Lane throughout 1913. In July, A. M. Lisby received his biggest payment on the project--$5,380--which probably included the Houck Bridge superstructure. The contractors on the Black and Wright roads must in turn have each subcontracted with the same steel fabricator--quite probably the Vincennes Bridge Company--who made these twin spans. Seated upon concrete abutments and wingwalls which the road contractor had prepared, each pin-connected, Pratt through-truss span extends 162 ft. in ten panels. With a truss-depth of at least 25 ft., the boxed top chords and end-posts were made from a pair of channels, cover plate, and battens riveted together. A pair of die-forged eyebars supply each panel of the lower chord. The truss-web consists of verticals made from a pair of laced and heavy channels (lightest in the outer panel), of diagonals of a pair of die-forged eyebars, and of counter braces in the six most central panels of cylindrical rods with turnbuckles. The I floor-beams are bolted to pin plates. They support rolled I-beam stringers which, with the beams, carries a timber deck with a 16 ft. roadway with 24 feet and 6 inches of vertical clearance. Braced-A portals, upper struts with knee braces, and upper and lower lateral bracing-- of threaded round rods--stiffen the structure. Latticed guardrails line the trusses.

The main roadway used since at least the middle of the Nineteenth Century to connect Greencastle with Bainbridge crossed Big Walnut Creek at the location of the Houck Bridge. Both the Houck and the Pinhook Bridges are the longest metal-truss structures in Putnam County, and they each have considerable truss-depth. They were likely designed and made by the Vincennes Bridge Company, a major Indiana bridge fabricator. An important local contractor, who engaged in a considerable number of bridge and road projects in the county, built the substructure and arranged for the purchase of the Houck superstructure. Bridge #146 retains its original members, including its latticed guardrails.

Bridge Considered Historic By Survey: Yes

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Maps and Links: Houck Iron Bridge

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