Downers Grove Interchange South-East Ramp
- DSI Repair and Strengthening Business Unit inspects and evaluates post-tensioned structures. Illinois State Toll Highway Authority (ISTHA) Bridge Inspection, Downers Grove, Illinois, USA. In: DSI Info, n. 13 ( 2005- 2006), S. 62.
- DSI Repair und Strengthening Business Unit prüft und bewertet vorgespannte Bauwerke. Illinois State Toll Highway Authority (ISTHA), Brückenüberwachung, Downers Grove, Illinois, USA. In: DSI Info, n. 13 ( 2005- 2006), S. 62-63.