The Bollman Truss Railroad Bridge in Savage, Maryland, is one of the oldest standing iron railroad bridges in the United States and the only surviving example of the Bollman suspension truss, an early all-metal design that influenced American railroad engineering. Built in 1852 for the Baltimore and Ohio Railroad and moved to Savage in 1887, it served a spur line to Savage Mill until 1947. Designed by self-taught engineer Wendel Bollman, the bridge reflects a durable and easily assembled system widely used through 1873. Its survival, distinctive iron construction, and later preservation made it a nationally recognized landmark in civil engineering and railroad history.

Photo: Wikipedia · Public domain

Photo: Wikipedia · Public domain

Photo: Wikipedia · Public domain

Photo: Wikipedia · Public domain

Photo: Wikipedia · Public domain

Photo: Wikipedia · Public domain

Photo: Wikipedia · Public domain

Photo: Wikipedia · Public domain

Photo: Wikipedia · Public domain

Columbia, Maryland · USA