In Iowa there are over 20,000 bridges on the secondary road system. The majority of these
bridges are under the jurisdiction of county engineers with limited budgets; therefore many
county engineers design and construct their own short-span bridges with their own labor
force. The objective of this research is to perform laboratory testing on a bridge alternative
that counties can design and construct. This concept involves the fabrication of precast units
composed of two steel beams connected by a thin concrete deck. The concrete deck …

Recent reports indicate that a significant number of the nation's bridges are either
structurally deficient or functionally obsolete. A large number of these bridges are on the
secondary road system and fall under the jurisdiction of county engineers with limited
budgets and engineering staff. In response to this problem, a bridge replacement system
was developed for simple span bridges with minimal to no skew that county engineers can
design and build with limited resources. The bridge system involves fabrication of precast …