survey

WA-RD 498.1
Authors: 
Joe P. Mahoney, Andrew W. Backus.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Monday, July 31, 2000
WA-RD 123.1
Authors: 
Harold C. Sorensen, Craig D. Olson.
Originator: 
Washington State Transportation Center (TRAC); Washington State University. Structural Engineering Section.
Publication Date: 
Tuesday, June 30, 1987
WA-RD 028.1
Authors: 
Bernard C. Koontz, Kenneth C. Kirkland.
Originator: 
Washington State Highway Commission; Washington (State). Dept. of Highways. Division of Planning, Research & State Aid.
Publication Date: 
Friday, October 31, 1975