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4 Those organizations, individuals, and information State transportation agency engineers and consulting sources contacted included: engineers. Hauling companies and construction and crane rental The information received was then analyzed and companies that routinely request permits to move synthesized. overweight loads: the Specialized Carriers and Rigging Association (SC&RA), Midwest Special- ORGANIZATION ized Carriers, Intermountain Rigging and Heavy Haul, Keen Transport, and Commercial Vehicle This synthesis report has five additional chapters. Chapter Safety Alliance. two presents a brief review of the relevant studies identified States that are perceived to have large load limits: in the literature search. Chapter three provides a summary of Kentucky, Michigan, and North Dakota. nonuniformity observed in permit types, processes of permit Southeastern Association of State Highway and review, personnel assigned to permit review, etc. Chapter four Transportation Officials (SASHTO) Multi-State discusses more details of bridge evaluation and rating as prac- Permit Group. ticed in the United States and Canada that may be the causes AASHTO BRIDGEWare Task Force. of the nonuniformity observed. Chapter five presents previ- Illinois Department of Transportation (DOT) sur- ous and current efforts to reduce nonuniformity in permit vey on Load and Resistance Factor Rating (LRFR) issuance and other relevant practices. The final chapter (chap- usage. ter six) summarizes the study, draws several conclusions, and New England Transportation Consortium (NETC). suggests future research relevant to the focused subject.