In 1856, Martin Ruff acquired the land The mill survived the Civil War and a small battle took place near the property in July 1864. In this battle, federal troops coming from Tennessee and on their way to Atlanta met and clashed with Confederate soldiers in Marietta and Smyrna along Nickajack Creek. In October 1864, Sherman sent a small force back to this area to protect his supply lines. Union soldiers manned defensive earthworks that had been created by Confederate soldiers in July but did not engage Confederates under General Hood who were operating in the area with the goal of attacking railroads and telegraph lines to disrupt Union communications and disrupt Sherman's supply train.
The bridge as been updated to support modern vehicles. It is mostly composed of heart-pine timber and iron rods it as been reinforced with steel beams and thicker wood planks. Concrete supports were added as well. Traffic through the bridge is heavy, in fact out of the few bridges of this style that remain in Georgia Concord Cover bridge as the highest volume of traffic. The bridge and mill are both significant to Georgia's historic architecture dating to the mid to late nineteenth-century rural complex which are historic resources that are quickly disappearing in Georgia.