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Bachelor Run Bridge

Carroll County Bridge 153

Bachelor Run Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: February 18, 2017

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Facility Carried / Feature Intersected
CR-250 S Over Bachelor Run
Location
Rural: Carroll County, Indiana: United States
Construction Date and Builder / Engineer
1910 By Builder/Contractor: Unknown
Rehabilitation Date
Not Available or Not Applicable
Main Span Length
20.3 Feet (6.2 Meters)
Structure Length
25.0 Feet (7.6 Meters)
Roadway Width
15.4 Feet (4.69 Meters)
Spans
1 Main Span(s)
Inventory Number
800113

Historic Significance Rating (HSR)
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Bridge Documentation

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

This is a very small and unusual skewed pony truss bridge with very lightweight truss members. It has some alterations and repairs made to it. It has a 45 degree skew.

Information and Findings From DHPA Historic Bridge Survey

Statement of Significance

About two-thirds of the south truss of this largely-riveted Warren pony is offset to the east. Given their low horizontal profile, the vertical end-posts are set behind and encased in the concrete abutments. The members are light, even for a pony truss. A pair of angles riveted together comprise the end-posts and top chord; a single provides the diagonals. The single vertical--a simple angle placed at mid-span--is bolted to a gusset at the top panel point along with a pair of diagonals and passes through the lower chord to the I floor-beam below. A sway-brace connected to the upper panel point with the vertical is bolted to a plate extended beyond the floor-beam to help stiffen the truss. The floor-beam helps to carry the runs of stringers above along with the concrete roadway. This unusual truss-beam hybrid seems to have retained most of its original members although in a new orientation. It is unusual for at least two reasons. First, load is significantly shared between the stringers and the trusses through the floor-beam and the lower mid-span panel point. Second, there are six lower panel points but only one floor-beam. The structure may have been designed and originally erected for a non-skewed crossing. Very few of these light pony trusses have survived in Indiana.

Other Information

References Charles J. Ritzler, Bridge Inspection Report: Carroll County (Delphi, 1974-75). Rumschlag Technical Services, Carroll County Bridge Inventory & Appraisal Report (Brownsburg, 2006).

Bridge Considered Historic By Survey: Yes

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Maps and Links: Bachelor Run Bridge

Coordinates (Latitude, Longitude):

Search For Additional Bridge Listings:

Bridgehunter.com: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

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HistoricBridges.org Bridge Browser: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

HistoricBridges.org Bridge Browser: View listed bridges within 10 miles (16 kilometers) of this bridge.

2021 National Bridge Inventory: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

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