The Lima and Toledo Traction Company Bridge was constructed in 1907 by the National Bridge Company of Indianapolis and was considered a revolutionary type of bridge construction. Called the Old Electric Bridge, it was built of steel reinforced concrete and filled with earth, and some considered it the longest such railroad bridge in the world for its time. Its twelve spans, designed in the style of Roman aqueducts, anchored the 1220-foot bridge in solid river bedrock. The bridge linked Lucas and Wood counties and connected busy Toledo with points south by electric trolley, and it was placed on the National Register of Historic Places in 1972. In the Maumee River, the once-massive limestone outcropping known as Roche de Bout or Roche de Boeuf marked many events in the valley's history. It was a legendary site for Native Americans and the place where they gathered before the Battle of Fallen Timbers in August 1794. Early records indicate that a nearby French settlement in the 1700s was called both Roche de Bout and Roche de Boeuf, though for the last hundred years or so the latter name has been used most often for both the rock and the lost settlement. About one-third of the rock was destroyed when the railroad bridge was built, causing great controversy.