Warren Truss
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    The Warren Truss was patented in 1848 by James Warren and Theobald Manzani and is marked by equilateral triangles.  David W. Harris, in his book Truss Fun, notes that "the diagonals carry both compression and tension forces," and "Warren Trusses generally can span distances of 50 to 400 feet." Variations include the subdivided Warren Truss, with vertical members bisecting the triangles, (as in the Uhlerstown-Frenchtown Bridge below), the double warren (shown below in the Washington Crossing Bridge and Riverton_Belvidere Bridge) evidencing a diamond-like appearance, and the quadrilateral Warren Truss.  For more information on these, see http://pghbridges.com/basics.htm.  The following are examples of the Warren Truss.  Click on the thumbnail for a larger view.
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Upper Black Eddy-Milford Bridge

Milford, New Jersey

 

 

 

Uhlerstown-Frenchtown Bridge

Frenchtown, New Jersey

 

 

 

Centre Bridge

Stockton, New Jersey

 

 

 

 

Washington Crossing Bridge

Washington Crossing, NJ

 
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State Street Bridge

Camden, New Jersey

 

 

 

 

Lower Trenton ("Trenton Makes" Bridge)

Trenton, New Jersey

 

 

 


Riverton-Belvidere Bridge

Belvidere, New Jersey