HistoricBridges.org Menu: HistoricBridges.org Menu:

We Recommend These Resources:
Bach Steel - Experts at historic truss bridge restoration.

HistoricBridges.org: Bridge Browser

Furnas Mill Bridge

Indiana State Highway Bridge 41-7430

Furnas Mill Bridge

Primary Photographer(s): Nathan Holth and Rick McOmber

Bridge Documented: September 22, 2012

View Photos
and Videos
View Maps
and Links

Key Facts

Facility Carried / Feature Intersected
Pisgah Road (CR-650 South) Over Sugar Creek
Rural: Johnson County, Indiana: United States
Construction Date and Builder / Engineer
1880 By Builder/Contractor: King Bridge Company of Cleveland, Ohio

Technical Facts

Rehabilitation Date
Main Span Length
119 Feet (36.3 Meters)
Structure Length
242 Feet (73.8 Meters)
Roadway Width
13.5 Feet (4.11 Meters)
2 Main Span(s)
NBI Number

Historic Significance Rating (HSR)
View Information About HSR Ratings

Bridge Documentation

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

This bridge was reportedly built ca. 1885. Its distinctive decorative portal bracing knees identify it as a product of the prolific King Bridge Company.

This bridge was reported to have been repaired around 1924. This bridge was more recently rehabilitated under a Transportation Enhancement grant for light vehicular use. The project was designed by J. A. Barker Engineering. The bridge retains its attractive built-up fishbelly floor beams. A creative, non-obtrusive method was used to strengthen this bridge. Rather than replacing members, and adding members, steel beams were hidden inside the top chord and end post. Given the box beam nature of the original top chord and end post, this is an excellent solution since the added beams fit into empty space and are quite nicely hidden by the original beams.

This bridge is located in the Atterbury Fish and Wildlife Area and is in a wooded setting. The light traffic the bridge sees and the recreational nature of the area, make this a great bridge to rehabilitate and preserve.

Information and Findings From DHPA Historic Bridge Survey

Statement of Significance

A once-prolific Ohio firm probably designed and erected these quite-long and Pratt spans. The crafting of the top chords, endposts, and floor beams suggests that the spans are also very old. The bridge retains its original members, including their decorated portals and bracing.

Architectural Description

An Ohio firm, probably the King Iron Bridge Company of Cleveland, built this two-span, pin-connected Pratt through structure upon cut stone abutments, wingwalls, and pier. The spans extend 118' and 119', respectively, with eight-paneled trusses. The channels used for the top chords and endposts were crafted to make for heavier and stiffer members than the contemporary off-the-shelf rolled stock allowed. A pair of rectangular eyebars, somewhat smaller towards center-span, are used for lower-chord members. Laced channels, decreasing in size toward midspan, provide the intermediate verticals, and a pair of square eyebars supply the hip-vertical suspenders. Each panel beyond the outer or endpost ones carry a pair of rectangualr eyebars as diagonals, and are countered in the two most central panels with an adjustable square bar. U-bolted to the lower pins, girder floor beams made deeper at center than at the ends carry a concrete deck with a 15'11" roadway. Narrow-channel guardrails protect the trusses. The trusses also carry latticed portals with additionally-decorated bracing.

Bridge Considered Historic By Survey: Yes


Photo Galleries and Videos: Furnas Mill Bridge

View Photo Gallery
Bridge Photo-Documentation
Original / Full Size Photos
A collection of overview and detail photos. This gallery offers photos in the highest available resolution and file size in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer
View Photo Gallery
Bridge Photo-Documentation
Mobile Optimized Photos
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


Maps and Links: Furnas Mill Bridge

Coordinates (Latitude, Longitude):

View Bridge Location In:

Bridgehunter.com: View listed bridges within a half mile of this bridge.

Bridgehunter.com: View listed bridges within 10 miles of this bridge.

Google Maps

Google Streetview (If Available)

Bing Maps


Apple Maps (Via DuckDuckGo Search)

Apple Maps (Apple devices only)


HERE We Go Maps

ACME Mapper

Waze Map

Android: Open Location In Your Map or GPS App

Flickr Gallery (Find Nearby Photos)

Wikimedia Commons (Find Nearby Photos)

Directions Via Sygic For Android

Directions Via Sygic For iOS and Android Dolphin Browser

USGS National Map (United States Only)

Historical USGS Topo Maps (United States Only)

CalTopo Maps (United States Only)

Home Top


About - Contact

© Copyright 2003-2021, HistoricBridges.org. All Rights Reserved. Disclaimer: HistoricBridges.org is a volunteer group of private citizens. HistoricBridges.org is NOT a government agency, does not represent or work with any governmental agencies, nor is it in any way associated with any government agency or any non-profit organization. While we strive for accuracy in our factual content, HistoricBridges.org offers no guarantee of accuracy. Information is provided "as is" without warranty of any kind, either expressed or implied. Information could include technical inaccuracies or errors of omission. Opinions and commentary are the opinions of the respective HistoricBridges.org member who made them and do not necessarily represent the views of anyone else, including any outside photographers whose images may appear on the page in which the commentary appears. HistoricBridges.org does not bear any responsibility for any consequences resulting from the use of this or any other HistoricBridges.org information. Owners and users of bridges have the responsibility of correctly following all applicable laws, rules, and regulations, regardless of any HistoricBridges.org information.

Admin Login