Bollman Suspension and Truss Bridge - Credit: Wikimedia Commons
Bollman Suspension and Truss Bridge - Credit: Wikimedia Commons
The Bollman Truss Railroad Bridge across the Little Patuxent River at Savage, Maryland, is one of the oldest standing iron railroad bridges in the United States and the sole surviving example of a revolutionary design in the history of American bridge engineering. The double-span was built in 1852 at an unknown location on the main line of the Baltimore and Ohio Railroad. It was moved 35 years later to its present location, where it replaced the very first Bollman bridge. Today, it carries the Savage Mill Trail. Read more on Wikipedia
Source: en.wikipedia.org