Reed Bridge was a covered road bridge over Big Darby Creek in Darby Township south of Marysville, Ohio, and for many years served local traffic. Built in 1884 by noted Ohio bridge builder Reuben Partridge, it used a Partridge truss and spanned more than 150 feet, making it the longest covered bridge in Union County. After State Route 38 bypassed it in the 1960s, it ceased to be a main crossing, but its historic importance was recognized when it was listed on the National Register of Historic Places in 1975. The bridge collapsed on August 19, 1993, and no longer exists.