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Rutledge Road Bridge

Rutledge Road Bridge

Primary Photographer(s): Luke Gordon

Bridge Documented: July 7, 2005

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Key Facts

Facility Carried / Feature Intersected
Rutledge Road Over Munuscong River
Rural: Mackinac County, Michigan: United States
Construction Date and Builder / Engineer
1914 By Builder/Contractor: Central States Bridge Company of Indianapolis, Indiana

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
81 Feet (24.7 Meters)
Structure Length
81 Feet (24.7 Meters)
Roadway Width
17.4 Feet (5.3 Meters)
1 Main Span(s)
NBI Number

Historic Significance Rating (HSR)
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Bridge Documentation

This bridge no longer exists!

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

This bridge was demolished and replaced in 2006!

This fascinating bridge sits on a short road that nearly nobody uses. So few people use it, that the road leading to it is more like a two track trail. In 2005 the bridge had a fairly new wooden deck on it. That did not save this bridge from being demolished and replaced. Replacing this bridge was an enormous waste of tax dollars and an equally large waste of history. The one lane bridge was perfect for a quiet rural "road" that is more like a trail. The bridge was in need of rehabilitation, but was not so deteriorated that rehabilitation would have been overly difficult or costly. The bridge was a significant historic bridge, as one of the first state trunk line bridges built in Michigan.

The Rutledge Road Bridge is among a handsome, well-proportioned example of a pony truss. The bridge is a Warren pony truss with riveted connections, and it sits on concrete abutments. Outriggers are present at the vertical members. The steel on the bridge was fabricated by the Cambria Steel Company. Original lattice railing remains on the bridge, and v-lacing is present on all diagonals, as well as under the top chord. A small portion of the lattice railing has been replaced by a section of metal that looks like someone took a little time to make look halfway like the lattice. The lattice and v-lacing add to the geometric beauty of the bridge.

The members on this bridge are a bit more massive than most Michigan pony trusses. The plaque on the bridge lends some insight as to why this is so. The bridge is listed as a State Trunkline Bridge, which means it would have been made more bulky than a rural truss bridge, since it would be carrying the heavier trunkline traffic. Since the construction date of this bridge is 1914, this bridge was built in the first year of the state trunkline system's existence! It is not the first however; that credit goes to a concrete girder in Marquette County. Rutledge Road Bridge is on a road that basically goes nowhere, and nothing indicates that this road was ever part of a state trunkline. As such, that seems to indicate that this bridge is not in its original location. This bridge may have been on a trunkline elsewhere, and when the bridge became insufficient for the road it was on, it was given or sold to Mackinac county, who used it for this rural crossing.

This bridge is significant as a former trunkline truss bridge, built in the first year of the state trunkline system's creation. It was likely built to a standard plan developed by the State Highway Department, although today it would be hard to tell due to lack of other similar bridges remaining. Also, as MDOT's website mentions, the bridge was built by Central State Bridge Co. of Indianapolis, and it is the last example of this company's work in Michigan. Its outstanding historic integrity also makes it an important structure. Plentiful v-lacing also makes this a beautiful bridge.

Information and Findings From Michigan Historic Bridge Inventory

Narrative Description

This bridge is the only known surviving example of a pony truss bridge built in Michigan by the Central State Bridge Company of Indianapolis, Indiana. With a main span of 81 feet, it is also among the longest known surviving Warren pony truss bridges in Michigan, since only fifteen percent of the total exceed eighty feet.


Photo Galleries and Videos: Rutledge Road Bridge

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Maps and Links: Rutledge Road Bridge

This historic bridge has been demolished. This map is shown for reference purposes only.

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