This invention relates to a novel pre-engineered, pre-assembled arch bridge design. More particularly, this invention pertains to a novel design of arch bridge which is environmentally friendly, and can be used in the construction of roads across creeks and rivers in remote areas, with minimum damage caused to river and stream beds and fish habitat. A pre-engineered arch bridge system for enabling bridges to be constructed across environmentally sensitive streams comprising: (a) an arch member; (b) a connection flange member adjoining each side of the base of the arch member; (c) a footing plate member positioned at the base of each side of the arch member, below the respective connection flange member; and (d) a lateral cross-strut member positioned below the respective footing plate members and connecting the respective footing plate members together.
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