Metal truss bridges are an important part of Pennsylvania’s engineering and technological history and stand as a legacy to the state’s iron and steel industry. Continue reading
![1905 short metal truss bridge over water](https://pahistoricpreservation.com/wp-content/uploads/2018/07/Photo-3.jpg)
Blog of the Pennsylvania State Historic Preservation Office
Metal truss bridges are an important part of Pennsylvania’s engineering and technological history and stand as a legacy to the state’s iron and steel industry. Continue reading
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