1. The Rockwell Stone Arch Bridge is the third bridge built on the same site to carry railroad tracks across the Susquehanna River.

2. It is believed to be the longest and widest stone-arch bridge ever constructed in the world.

3. The Rockwell Stone Arch Bridge was built in manner resembling the aqueducts of the Roman Empire.

4. It replaced an iron two-track bridge built in 1877, and an earlier wooden bridge carrying a single track, completed in 1850.

5. It demonstrated the successful evolution of stone-arch-building in America, placing 48 spans of 70 feet across the flood-prone Susquehanna River and eliminating a significant bottleneck on the main railroad between Pennsylvania and New York.

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