West Bridge, also designated Bridge 6527, is a historic truss bridge over the Watonwan River in Madelia, Minnesota, United States. It was listed on the National Register of Historic Places in 2013 for its state-level significance in the theme of transportation. It was nominated for being the only surviving work of seminal Minnesota bridge builder Commodore …West Bridge, also designated Bridge 6527, is a historic truss bridge over the Watonwan River in Madelia, Minnesota, United States. It was listed on the National Register of Historic Places in 2013 for its state-level significance in the theme of transportation. It was nominated for being the only surviving work of seminal Minnesota bridge builder Commodore P. Jones, and for its early use of riveted joints.