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Bridge Cable Sample
1928

Suspending the George Washington Bridge
Three feet in diameter and 10 feet long, this sample section of suspension cable for the George Washington Bridge weighs an amazing 18.5 tons. The cable is made up of 26,474 individual steel wires, compacted under 400 tons of pressure. Before computers, this experimental section helped engineers model the effects of compression on the finished bridge's cables.

Notes
Bridge construction began October 21, 1927
Opened October 25, 1931, eight months ahead of schedule; lower deck opened August 29, 1962
Width of main span, 3,500 feet
Othmar H. Ammann, chief engineer, Leon S. Moisseiff, advisory engineer of design, Cass Gilbert, consulting architect

Learn more!
· "Othmar Ammann's Glory" by Valerie Jablow, "Smithsonian" magazine, October 1999
· Making Suspension Bridge Cables
· George Washington Bridge
· Othmar H. Ammann

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