A rarely told story of modern suspension bridges involves the unbuilt projects that preceded the structures we know so well today. Richard Scott, author of In the Wake of Tacoma: Suspension Bridges and the Quest for Aerodynamic Stability, will explore how these often provocative proposals have contributed to the state of the art. His talk will include two New York City proposals: the early 20th century stiffened chain proposals of Gustav Lindenthal across the Hudson River and David Steinman’s plans for a Liberty Bridge across the Narrows. Little-known but significant proposals for the Mackinac Straits and the Tagus River at Lisbon, Portugal, are among other schemes to be discussed. How might suspension bridge design evolved had these projects been built? And how did tremendous personal rivalries drive the engineers behind them? Join Scott at the 2015 ASCE Convention in New York from Oct. 11 to Oct. 14 as he discusses the fascinating stories behind these “paper” bridges.