Othmar Ammann's name may be unfamiliar, but the six magnificent New York City bridges he created are known to all: George Washington, Bayonne, Triborough, Bronx-Whitestone, Throgs Neck, & Verrazano-Narrows. Ammann's long-span bridges came to define an epoch & shape the modern New York metropolis. This book is the first to examine the genius of Ammann & the special group of bridges he designed & engineered as part of the New York region's interstate highway system. With more than 200 archival photographs, the book vividly displays the physical transformation of New York, the development of long-span suspension structures, the construction process of each bridge, & the spectacular completed bridges. Widely considered the greatest American bridge designer of the twentieth century, Swiss-born Ammann (1879-1965) gained experience designing railroad bridges in Pennsylvania before beginning his work in New York City. This book considers the artistic, scientific, & technical achievements embodied in the six major bridges Ammann produced between 1925 & 1964, as well as the bridges' impact on the city. The book features an illustrated & annotated list of all Ammann's built & unbuilt projects & a glossary of technical terms.