The Waldo Bridge or Riddle's Mill Bridge, is a 115-foot-long wooden covered bridge over Talladega Creek at Riddle's Mill, south of Waldo. The bridge is thought to have been constructed in 1858. It employs a combination Howe and Queen-post truss frame of heavy timbers.
In the 1970s, the privately-owned bridge was restored and used as the centerpiece of a festival ground, home of the Waldo Sorghum Festival. The grounds are currently closed, but permission to view the bridge can be sought at the Old Mill Restaurant.
- Prince, A. G. (1981) Alabama's Covered Bridges: Past and Present. revised edition. Ensley: Best Printing Service
- Waldo Covered Bridge at dalejtravis.com