In 1908, the 400-foot arch bridge started as a way to transport goods across the Deerfield River in Shelburne Falls (Massachusetts) by rail. Then cars arrived and a new bridge was created just down stream, making the previous one redundant.
Local resident Antoinette Burnham started to create a garden on the old bridge in 1929. It became a tourist attraction and it's now dedicated to veterans.
For more info: The Bridge of Flowers