The bridge is on a relatively low volume county road. It does not get a lot of traffic, but it is in an agricultural area and carries a lot of farm to market traffic, especially in the fall of the year. Farmers typically have little concern for legal load limits, and it is quite likely that...
I’m completing the load capacity rating for an older steel beam bridge with a 4” thick timber deck. Steel beams are S15x42.9 @ 2’-4” O.C. Span length is 30 ft (Simple Span). As best I can tell, there is no connection between the timber deck and the steel beams and no intermediate diaphragms...
