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.
Stone
YearAdded:
Image Credit: Courtesy Flickr/John Mueller (CC BY 2.0)Image Caption: Rockville Stone Arch BridgeEra_date_from: 1902
1979
"For 273 years, the little stone bridge that carries Frankford Ave. across Pennypack Creek has been doing its humble job with a minimum of attention..."
- Gerald McKelvey, The Philadelphia Inquirer, September 16, 1970
YearAdded:
Image Credit: Public Domain (National Park Service)Image Caption: Frankford Avenue BridgeEra_date_from: 1697
1970
The stone was set by the joint U.S.-Spanish survey party on April 10, 1799. Made of sandstone, it is roughly two feet high and eight inches thick. On the north side of the stone is the inscription "U.S. Lat. 31, 1799." On the south side is "Dominio de S.M. Carlos IV, Lat. 31, 1799."
YearAdded:
Image Credit: Public Domain (Author's Choice)Image Caption: Ellicott's StoneEra_date_from: 1799
1968
Innovations
The stone was set by the joint U.S.-Spanish survey party on April 10, 1799. Made of sandstone, it is roughly two feet high and eight inches thick. On the north side of the stone is the inscription "U.S. Lat. 31, 1799." On the south side is "Dominio de S.M. Carlos IV, Lat. 31, 1799."
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"For 273 years, the little stone bridge that carries Frankford Ave. across Pennypack Creek has been doing its humble job with a minimum of attention..."
- Gerald McKelvey, The Philadelphia Inquirer, September 16, 1970
Built more than a century before the reign of Napoleon,…
Read More
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…
Read More