ABSTRACT
ABSTRACT: This paper describes the design and construction of a new steel bridge system that is being used on a more regular basis in the U.S. The system is designed to force the elements of the bridge to act as simple spans for dead loads and continuous under any superimposed loads, after the concrete has cured. This paper provides highlights of the design and construction of the first bridge in the U.S. that utilized this concept in conjunction with the use of box sections. The use of this system has resulted in significant economy and is making steel bridges competitive with alternate concrete bridges. Following Nebraska, Tennessee, Illinois, New York, Colorado and Oregon have recently begun using this new system.
