Othmar Hermann Ammann
O. T. Ammann (26 March 1879 – 22 September 1965) was a Swiss-American civil engineer.
He emigrated to the United States in 1904.
Ammann was the author of two major reports on bridge failures - Quebec Bridge and the original Tacoma Narrows Bridge (Galloping Gertie). It was the report that he wrote about the failure of the Quebec Bridge in 1907 that first earned him recognition in the field of bridge design engineering.
He obtained a key position working for Gustav Lindenthal on the Hell Gate Bridge. By 1925, he had been appointed bridge engineer to the Port of New York Authority. His design for a bridge over the Hudson River was accepted over Lindenthal's proposed "North River Bridge" design.
Amman's major bridge designs include the George Washington Bridge, new Verrazzano-Narrows Bridge, and Bayonne Bridge. He also directed the planning and construction of the Lincoln Tunnel.