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Union Canal Tunnel
Society: ASCE Main Category: Civil Sub Category: Tunnels Era: 1800-1829 DateCreated: 1828 Union Canal Lebanon State: PA Zip: Country: USA Website: Creator: Ives, John

According to oral history, George Washington visited the canal diggings in 1792, and then again in 1794, while he was accompanying troops to suppress the Whiskey Rebellion in Western Pennsylvania. 

Image Credit: Courtesy Flickr/Ospreye (CC BY 2.0) Image Caption: Union Canal Tunnel Era_date_from: 1828
Rockville Stone Arch Bridge
Society: ASCE Main Category: Civil Sub Category: Bridges Era: 1900-1909 DateCreated: 1902 Susquehanna River Marysville State: PA Zip: 17053 Country: USA Website: Creator:

The third bridge built on the same site to carry railroad tracks across the Susquehanna River just north of Harrisburg, Pennsylvania, the Rockville Stone Arch Bridge, at 3,820 feet long and 52 feet wide, is believed to be the longest and widest stone-arch railroad bridge in the world. A central link in rail travel between New York City and Pittsburgh, the Rockville Stone Arch Bridge accommodates four lines of railroad tracks, today serving both the Norfolk Southern and Amtrak lines.

Image Credit: Courtesy Flickr/John Mueller (CC BY 2.0) Image Caption: Rockville Stone Arch Bridge Era_date_from: 1902
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