Hennegan and Associates, Ltd. has been serving the bridge construction industry since 1976 as one of the leading suppliers of bridge materials. Through prompt and reliable service, innovative products and a continuing dedication to customer satisfaction, Hennegan and Associates has risen to the forefront of the bridge construction industry.  Hennegan and Associates carries the most complete line of bridge expansion joints and structural steel items in the mid-west.  We look forward to serving your needs at your earliest convenience.