Modular span multi-cell box girder bridge system

A bridge for carrying traffic between spaced-apart supports for the bridge, having a first module that comprises a plurality of longitudinal sections each having generally horizontal upper and lower members overlapping respectively portions of the generally horizontal upper and lower members of a neighboring section, and each having at least one generally vertical member extending between the upper and lower horizontal members and spaced from a generally vertical member of a neighboring section to define one of a plurality of closed cells, a second module having a plurality of the series of longitudinal sections connected adjacent to each other substantially the same as the first module;

• a third module having a plurality of the series of longitudinal sections connected adjacent to each other substantially the same as the first module, the first module having a longitudinal lip along a longitudinal side, the second module having a longitudinal groove along a longitudinal side for cooperating with the longitudinal lip of the first module to connect with the first module, the second module having a longitudinal lip along another longitudinal side opposite from the longitudinal groove, and the third module having a longitudinal groove along a longitudinal side for cooperating with the longitudinal lip of the second module to connect with the second module;
• and a series of parallel wood panels each disposed over and extending across the first, second, and third modules, the wood panels being oriented substantially perpendicular to the longitudinal axes of the first, second, and third modules.

A bridge for carrying traffic between spaced-apart supports for the bridge, having a first module that comprises:

• a plurality of longitudinal sections each having generally horizontal upper and lower members overlapping respectively portions of the generally horizontal upper and lower members of a neighboring section, and each having at least one generally vertical member extending between the upper and lower horizontal members and spaced from a generally vertical member of a neighboring section to define one of a plurality of closed cells, wherein the longitudinal sections are connected in a skewed manner relative to each other, wherein the plurality of longitudinal sections comprise a plurality of C-shaped sections oriented in a first direction and connected to each other in series to form a plurality of the closed cells and one open cell at an end with the upper and lower horizontal members pointing in the first direction, wherein the plurality of longitudinal sections further comprise a shallow C-shaped end section oriented in a second direction opposite from the first direction, the upper and lower horizontal members of the shallow C-shaped end section coupling with the upper and lower horizontal members of the C-shaped section of the open cell to change the one open cell to a closed cell;
• a pair of diaphragm plates connected to inner surfaces within each closed cell adjacent longitudinal ends of the closed cell to form an air-tight closed cell;
• and
• a plurality of shear studs connected to the outer surfaces of the diaphragm plates.