Point Pleasant’s Silver Bridge, the first eyebar suspension bridge in the United States, was an engineering marvel when it was constructed in 1927 and 1928. Located on US Highway 35, the bridge spanned the Ohio River and linked Point Pleasant, West Virginia, with the towns of Kanauga and Gallipolis, Ohio. For almost 40 years, the structure provided dependable service for travelers in the region. On December 15, 1967, this service came to a dramatic and disastrous end. At 4:58 p.m., during the height of rush hour, the bridge suddenly collapsed. Rescue and recovery operations started immediately but were hampered by poor weather conditions and freezing rain. The cause of the collapse was linked to the bridge’s innovative design. Undetected corrosion stress cracks caused an eyebar on the Ohio side to fracture; because the eyebars were linked together in a chain, the failure of one led to the catastrophic collapse of the entire bridge. In total, 46 lives were lost in the disaster.
Pittsburgh is the "City of Bridges," and what remarkable bridges they are The area's challenging topography of deep ravines and mighty rivers--the Monongahela, Allegheny, and Ohio--set the stage for engineers, architects, and contractors to conquer the terrain with a variety of distinctive spans. Many were designed to be beautiful as well as functional. While other cities may have one signature bridge, Pittsburgh has such a wide variety that no single bridge can represent it. Pittsburgh's Bridges takes a comprehensive look at the design, construction, and, sometimes, demolition of the bridges that shaped Pittsburgh, ranging from the covered bridges of yesterday to those that define the skyline today.
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Norbert Delatte presents the circumstances of important failures that have had far-reaching impacts on civil engineering practice, organized around topics in the engineering curriculum.