Final Report Appendix A (PDF)

Project TitleLife Extension of Fatigue-Damaged Highway, Rail, and Transit Bridges
UniversityLehigh University
Principal Investigator(s)Richard Sause, Lehigh University
PI Contact Informationrsause@lehigh.edu
Funding Source(s) and Amounts Provided (by each agency or organization)Federal Share, $64,620.00, Match, $64,621.00
Total Project Cost$129.241.00
Start and End Dates3/1/19—6/1/20 (extended through 12/31/20)
Brief Description of Research ProjectThis project will develop improved methods to assess and repair fatigue cracks when they are initially identified. The current practice uses visual inspection to determine the crack geometry and to drill crack-arrest holes. Field experience, however, suggests that cracks “re-initiate” from these holes.