The Illinois Central Railroad merged with the Gulf, Mobile, & Ohio Railroad on August 10, 1972, to form the Illinois Gulf Central Railroad. The IGC operated the rail line through La Salle. The IGC later abandoned the rail line that included the La Salle Rail Bridge. The last IGC train to cross this bridge was on December 21, 1985 (according to the Bridgehunter web site). The bridge and a short section of the right-of-way going south was purchased by the Buzzi Unicem company, which owns the concrete factory on the north side of the river. Buzzi Unicem uses the bridge and rail spur to haul in raw materials and haul out finished product.
There are good views of this bridge from both the IL-351 Shippingsport Bridge and the I-39 Abraham Lincoln Memorial Bridge. It is worth seeking out this bridge since it is one of the oldest operating rail bridges in the midwest.