The Fox River Aqueduct was originally completed in 1848. It was the largest of the Illinois Michigan Aqueducts measuring 464 feet in length. The superstructure was originally made of wood later replaced with metal. This was supported with limestone piers. This structure crossed was the Fox River in Ottawa
. Main contractor was David Sanger and Sons. Other contractors mentioned in canal records included: William Howe and a Mr. Williams. In addition to carrying the water of the I and M canal; the structure at one time carried the trains of an electric line. The aqueduct is currently dry.