Kate Shelley High Bridge

The Kate Shelley High Bridge, officially called the Boone Viaduct when it was completed in 1901, was one of the highest and longest double-track railroad bridges in the United States. It is located approximately 3 miles (4.8 km) west of Boone, Iowa.

Kate Shelley High Bridge

The Kate Shelley High Bridge, officially called the Boone Viaduct when it was completed in 1901, was one of the highest and longest double-track railroad bridges in the United States. It is located approximately 3 miles (4.8 km) west of Boone, Iowa.