1. AASHTO (1992). "Standard Specifications for Highway Bridges." Fifteenth Edition
2. AASHTO (1992). "Highway Drainage Guidelines Vol. VII Washington D.C.
3. Arneson L. Shearman J.O. and Jones J.S. (1991). "Evaluating Scour at Bridges Using WSPRO " Presented Paper 71st Annual TRB meeting Washington D.C.
4. Code of Federal Regulations. (1992). National Bridge Inspection Standards 23 CFS 650 Subpart C U.S. Government Printing Office Washington D.C.