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Frisco Bridge

Memphis Bridge

Frisco Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: November 6, 2016

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Facility Carried / Feature Intersected
Railroad (BNSF) Over Mississippi River
Memphis: Shelby County, Tennessee and Crittenden County, Arkansas: United States
Structure Type
Metal Cantilever 28 Panel Pin-Connected Baltimore Through Truss, Fixed and Approach Spans: Metal 12 Panel Pin-Connected Warren Deck Truss, Fixed
Construction Date and Builder / Engineer
1892 By Builder/Contractor: Baird Brothers of Pittsburgh, Pennsylvania and Engineer/Design: George Shattuck Morison
Rehabilitation Date
Main Span Length
790.4 Feet (240.9 Meters)
Structure Length
4,988.0 Feet (1520.3 Meters)
Roadway Width
30 Feet (9.14 Meters)
4 Main Span(s)
Inventory Number
Not Applicable

Historic Significance Rating (HSR)
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Bridge Documentation

View Historic American Engineering Record (HAER) Documentation For This Bridge

HAER Data Pages, PDF - HAER Drawings, PDF

View Tennessee Historic Bridge Report For This Historic Bridge

View Historical Articles About George Morison

View Historical Article For This Historic Bridge

View Historical Detailed Engineering Report For This Historic Bridge

This bridge is one of the most important historic bridges in the country, all on its own. What makes this setting even more unique is that this bridge sits right next to another nationally significant historic bridge, the Harahan Bridge. To top this all off, the highway bridge that is also next to these two railroad bridges is also historic, and is the Memphis and Arkansas Bridge. Three historic cantilever truss bridges over the Mississippi River side by side, two of those bridges being nationally historic: there is no other historic bridge trio like this in North America.

This bridge is one of the few surviving cantilever truss bridges that date to before 1900 in North America. Completed two years after the larger and more famous Forth Bridge in Scotland, this bridge is nevertheless significant in terms of American history as one of the earliest large-scale cantilever truss bridges. It is also the crowning achievement of engineer George Morison, who designed some of the first large-scale metal truss bridges in America, including many record-breaking spans. Most of his large-span truss bridges were simple spans however, so this cantilever truss bridge stands out as unusual among his bridges. Sadly, nearly all of Morison's bridges have been demolished, and even among those which remain today, not all are being preserved. Even this monumental, nationally significant historic bridge was as of 2016 facing the most significant alteration to its historic integrity since its construction in 1892: the entire western approach system was being demolished and replaced! While this does not affect the cantilever spans, this is regardless an alarming and disappointing outcome. The replacement of these spans is an unfortunate casualty of this bridge's remarkable status as a railroad bridge that continues, despite its age, to be used today by an enormous amount of railroad freight trains.

As might be expected of such a large bridge, more than one notable engineer was involved with it, and many contractors fabricated and constructed the bridge. In addition to Morison, who was chief engineer, noted engineer Alfred Noble was resident engineer for the project. Union Bridge Company, Pencoyd Iron Works, and the Pennsylvania Steel Company all played a role in fabrication. The main superstructure contractor was Baird Brothers of Pittsburgh.

2,597 feet of the bridge are composed of the cantilever through truss spans and the deck truss span at the western end. The length including approaches is roughly 5,000 feet. Depending on the source you use, historical reports note an overall length of 4,887 feet or 4,988 feet.

Above: Historical photo showing bridge construction. Note falsework under the half-suspended span, while in the distance the fully suspended span was erected without use of falsework.

Above: Historical photo showing newly completed bridge.


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