1. Master Engineer, Iowa Dept. of Transportation, 800 Lincoln Way, Ames, IA 50010. E-mail: kenneth.dunker@dot.iowa.gov
2. Senior Bridge Engineer, Parametrix, 700 NE Multnomah, Suite 1000, Portland, OR 97232; formerly, Senior Structural Engineer, Parsons, 10 South Riverside Plaza, Suite 400, Chicago, IL 60606. E-mail: dliu@parametrix.com