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O'Neal Bridge

Boone County Bridge 207

O'Neal Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: February 19, 2017

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Key Facts

Facility Carried / Feature Intersected
Holliday Drive Over Big Eagle Creek
Location
Rural: Boone County, Indiana: United States
Construction Date and Builder / Engineer
1892 By Builder/Contractor: Lafayette Bridge Company of Lafayette, Indiana

Technical Facts

Rehabilitation Date
2009
Main Span Length
113 Feet (34.3 Meters)
Structure Length
114 Feet (34.7 Meters)
Roadway Width
15.7 Feet (4.79 Meters)
Spans
1 Main Span(s)
NBI Number
600140

Historic Significance Rating (HSR)
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Bridge Documentation

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

This classic Pratt truss bridge has an unusual portal and strut design giving it a unique appearance.

Information and Findings From DHPA Historic Bridge Survey

Statement of Significance

The Newcastle Bridge Company billed the county $685 in December 1904 for work on a bridge in S26/T18N/R2E, which could be either #207 or #187. Seated upon caissons and a metal plate behind driven I-beam substructure on the west and replacement concrete abutments and wing-walls on the east, this single-span, pin-connected Pratt through structure carries latticed portal struts and fan-shaped portal bracing. A pair of latticed channels provides the intermediate verticals, and a pair of die-forged eye-bars serve as the diagonals in all except the center panel. A pair of adjustable and cylindrical rods supply the diagonals and counters for the center panel. Single adjustable rods counter the diagonals in the third and fifth panels. The I floor-beams are U-bolted to the lower pins. They support runs of I-beam stringers with a timber deck above. The trusses are lined with latticed guardrails and allow for 16 feet and 8 inches of vertical clearance. The superstructure is rather conventionally designed. The remaining, original metal substructure is noteworthy.

Other Information

References Beam, Longest, & Neff, Inc., Bridge Inventory Rating and Safety Inspection: Boone County (Indianapolis, 1977, 1981). Bernardin, Lochmueller & Associates, Bridge Inspection Report: Boone County (Evansville, 2003). Indiana Historic Sites & Structures Inventory, Boone County: Interim Report (Indianapolis, 1982), 50-51. Boone County, "Claim Docket," 7: 264.

Bridge Considered Historic By Survey: Yes

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Photo Galleries and Videos: O'Neal Bridge

 
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A collection of overview and detail photos. This gallery features data-friendly, fast-loading photos in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer

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Maps and Links: O'Neal Bridge

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