The Kinzua Bridge or the Kinzua Viaduct was a railroad trestle that spanned Kinzua Creek in McKean County in the U.S. state of Pennsylvania. The bridge was 301 feet (92 m) tall and 2,052 feet (625 m) long. Most of its structure collapsed during a tornado in July 2003.[1]
Coverage[]
The Kinzua Viaduct is examined in the documentary as a case study on how iron & steel structures would collapse along with analysis from Alan W. Pense.
Alan W. Pense showing the corroded pieces of Kinzua Viaduct.
It was introduce in 200 years after people when the documentary compares the commonality of the Eiffel Tower with the Kinzua Viaduct. Alan W. Pense stated that the bridge was originally wrought iron and was reconstructed in steel at the turn of the century before continuing that unless its maintained, corrosion occurs which cause the connection points to freeze up and not allowing it to move. He then shows some pieces from the viaduct with corrosion all over it.
A structure with frozen connection points can't absorb the stress of high winds, which shows on the Kinzua Viaduct. Alan W. Pense stated that eventually, a strong wind storm cause the Kinzua Viaduct to fell over into the valley where it spanned for over a hundred years, from section by section, and piece by piece.
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