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Vernon Fork Bridge

Decatur County Bridge 106

Vernon Fork Bridge

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: September 22, 2012

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Key Facts

Facility Carried / Feature Intersected
CR-820 South (Millhousen Road) Over Vernon Fork Muscatatuck River
Location
Rural: Decatur County, Indiana and Ripley County, Indiana: United States
Structure Type
Stone Semicircular Deck Arch, Fixed
Construction Date and Builder / Engineer
1892 By Builder/Contractor: James W. Craig

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
32 Feet (9.8 Meters)
Structure Length
102 Feet (31.1 Meters)
Roadway Width
17.4 Feet (5.3 Meters)
Spans
3 Main Span(s)
NBI Number
1600085

Historic Significance Rating (HSR)
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Bridge Documentation

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

This bridge is one of a substantial number of stone arch bridges in this region. This particular example stands out for its multi-span design with fairly tall arches and noteworthy total length given other surviving examples in the area. The bridge is also noted for its lack of alteration. It is significant as a pre-1900 example, since a number of the stone arch bridges in the area date to after 1900.

Information and Findings From DHPA Historic Bridge Survey

Statement of Significance

This bridge follows the conventions used with most of the stone arches built in the state's south-central counties anbd represents one of the nearly two dozen structures of its kind in Decatur County. The structure is unusually long, the spans particularly wide, and the whole remarkably close to its original condition.

Architectural Description

Local craftsmen built most of Indiana's stone arches from regional materials just before or in the first two decades of the 20th Century. Following a few simple rules of thumb that had evolved since Roman days, stonemasons erected full-centered or semicircular arches in which the line of pressure passes through the center of each stone in the arch ring until carried vertically into the substructure. Most of the state's stone arches span streams in south-central counties. With more than two dozen extant, Decatur County built the largest number. By World War I, the growing popularity of concrete, which engineers could readily adjust to the special needs of each specific bridge site, quietly ended most stone arch construction in the region.

This limestone, three-span structure is 111' long and carries a 17'6" asphalt roadway between stone walls. The arch rings are semicircular, and their stones are roughly-cut and mortared. Springing from near the water level, the arches rise about 16' over a span of 32'. The bridge has stone footings, abutments, and wingwalls.

Other Information

On learning in December 1888 that the Ripley county commissioners were willing to participate in building of a bridge across the Muscatatuck on the Napoleon-Millhousen Road at the county line, the Decatur board begged off until the remodeling of the court house was complete. The Decatur commissioners would stick to their declared no-new-bridges for the duration policy. In mid-May 1892, the Ripley board again expressed its interest in a bridge on the county line, and this time the Decatur board agreed and appointed Samuel L. Anderson to draft plans and specifications. The boards held a joint meeting in Millhousen towards the end of the month and accepted Anderson's proposed specifications for a metal-truss structure. The letting was set for mid-July in Versailles, and the contract was to be awarded to "the lowest and best bidder." After considering 19 proposals, the joint boards accepted the bid of James W. Craig for "a triple arch bridge." Samuel Anderson was appointed superintendent of construction. In mid-October, the joint boards inspected the completed new bridge and accepted it at the contracted price of $2,537.88. In December 1894, the Decatur board took the lead in securing bids on "drywalls to support the fill of the approaches" and contracted with the Layton Brothers & Co. [George Layton] for the work. At the end of 1895, the Decatur commissioners again contracted with Layton Brothers & Co., this time for the erection of a stone wall to be built against the south side of the west approach. The agreed-upon price for the masonry was $1.50 per cubic yard.

Bridge Considered Historic By Survey: Yes

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Maps and Links: Vernon Fork Bridge

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