The Kinzua Bridge, also known as the Kinzua Viaduct, was a railway trestle that spanned the Kinzua Creek in McKean County in the U.S. state of Pennsylvania until a portion of it collapsed in 2003. The bridge was 301 feet (92 m) tall and 2,052 feet (625 m) long. Originally built out of iron in 1882, it was the tallest railroad bridge in the world until 1885. In 1900, the bridge was dismantled and then rebuilt out of steel. Before its collapse, the Kinzua Bridge ranked as the fourth tallest railway bridge in the United States. It was listed on National Register of Historic Places and as a National Historic Civil Engineering Landmarks in 1977. The Kinzua Bridge is located in the Kinzua Bridge State Park off of U.S. Route 6 near Mount Jewett, Pennsylvania.
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