Dr. Riddell is an associate professor in the Civil and Environmental Engineering program at Rowan University. His research and teaching interests include structural mechanics,materials, transportation safety and sustainabilty. Prior to coming to Rowan in 2004, Dr. Riddell worked for the US DOT, Research and Special Programs Administration in Cambridge, MA, and was a NRC Postdoctoral Fellow in residence at the Mechanics of Materials branch of NASA Langley Research Center. He received his B.S. from the University of Massachusetts and his Ph.D. from Cornell University.