The new steel bridge was built onto a sliding track that is coated with Teflon so it can slowly slide the 102 feet into position.
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Pennsylvania's Serene Inner-City Walking Trail Is A Pittsburgh Gem Through River Banks, Bridges, And Urban Areas
Pittsburgh has a proud history as an industrial powerhouse. Known as the Steel City, Pittsburgh once produced more than 60% of America's steel, becoming the foundation for the country's skyscrapers ...
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