At the site of the crossing of the I and M canal and Aux Sable Creek, there is an aqueduct. The original aqueduct was completed in 1847. Its superstructure was a 2 span timber Howe truss. This was supported by limestone piers. It was 136 feet in length and 28 feet wide. In 1927-8, the wooden aqueduct was replaced by a steel structure. In 1948, the limestone piers and abutments were reinforced. After 1986, the piers were rehabbed. The superstructure was painted.
Currently, the aqueduct is a trough with riveted steel plate girders. This rests on ashlar limestone piers and abutment.
According to records kept in the Illinois State Archives, the following is a list of contractors working on the aqueduct: Matteson, Campbell, Hall, Lord, Wall, Sordslo, Kinsley, Mallison.