Half Chance Iron Bridge, Historic road bridge in Marengo County, Alabama.

The Half Chance Iron Bridge is a single-span wrought iron tied-arch bridge over Chickasaw Bogue Creek on Marengo County Road 39, between Linden and Dayton. Its span is 100 feet (30 m) and its deck 12 feet (3.7 m) wide; the King Iron Bridge Manufacturing Company of Cleveland, Ohio, built it in 1880. The structure no longer exists, having been reported destroyed in a flood between 2008 and 2012.

The Half Chance Iron Bridge was built in 1880 by the King Iron Bridge Manufacturing Company of Cleveland, Ohio, founded in 1871 by Zenas King. It was the oldest surviving iron bridge in Alabama. The structure was reported destroyed in a flood between 2008 and 2012 and no longer exists.

The bridge shows how iron construction methods transformed transportation in Alabama's rural areas during the late 1800s, connecting communities that had few other crossing options.

The bridge no longer exists: it was reported destroyed in a flood between 2008 and 2012. County Road 39 has been rerouted over the years, and the former bridge site now lies about a quarter mile south of the current road, on private property. There is nothing left to visit, and access to the land requires the owner's permission.

The bridge was a 100-foot (30 m) tied-arch span, 12 feet (3.7 m) wide, fabricated by the King Iron Bridge Manufacturing Company of Cleveland, Ohio, founded in 1871 by Zenas King. By the 1880s the firm was the largest highway bridge builder in the United States. The structure was reported destroyed in a flood between 2008 and 2012 and no longer exists.