Box Girder superstructures are most popular type amongst all other type bridge superstructures and are extensively
used. Nowadays to provide better riding quality and in order to reduce number of substructures and foundations for more clear
space underneath, long span continuous or integral type bridge superstructures are preferred. For longer span bridges to reduce
dead load and to utilize material to its capacity cellular sections are the most efficient sections in this regard. Box girder is one of
the cellular sections.
