Starrucca Viaduct. Built in 1847-48 by the Erie Railroad, it is the oldest stone railroad bridge in use today. The viaduct is 1200 feet long, 110 feet high, and 30 feet wide at the top. Main St. (SR 1009), near viaduct, Lanesboro, PA by Pennsylvania Historical and Museum Commission Colour: blue Wikimedia: Flickr: Google Streetview OpenStreetMap