In 1849, the new Wheeling Suspension Bridge was a triumph of engineering, the world's longest clear span bridge. The Wheeling bridge was also a landmark in the development of the American frontier, spanning the Ohio River to speed settlement and commerce in the Midwest and beyond. In 1999, historians, engineers, and industrial archaeologists from around the world met in Wheeling to celebrate the still-busy bridge's 150th anniversary. This book presents highlights of the conference, and points out the far-reaching effects of bridge-building.