OTHMAR AMMANN SIGNATURE, "Othmar Ammann", on 5 x 3 sheet of paper, by the designer and engineer of over half of New York City Bridges. In fine condition.
Othmar Hermann Ammann (March 26, 1879 – September 22, 1965) was a Swiss-American structural engineer who designed more than half of the eleven bridges that connect New York City to the rest of the United States. His talent and ingenuity helped him create the two longest suspension bridges of his time. Ammann was known for being able to create bridges that were light and inexpensive, yet they were still simple and beautiful. He was able to do this by using the deflection theory. He believed that the weight per foot of the span and the cables would provide enough stiffness so that the bridge would not need any stiffening trusses. This made him popular during the depression era when being able to reduce the cost was crucial. Famous bridges by Ammann include the following: George Washington Bridge (Oct 1931), Bayonne Bridge (Nov 1931), Triborough Bridge (July 1936), Bronx-Whitestone Bridge (April 1939), Walt Whitman Bridge (May 1957), Throgs Neck Bridge (Jan 1961), Verrazano Narrows Bridge (Nov 1964). He also directed the planning and construction of New York City's Lincoln Tunnel.