Double deck bridge structure

The present invention relates to bridge structure, and is especially double-deck bridge comprising bridge towers, piers and two layers of deck. The lower deck has main beams suspended onto the main beams of the upper deck and has rigid vertical supports in the ends. There are longitudinal damping or limiting seats in the bridge towers, transverse limiting seats in the piers, and vertical or inclined suspending cables or rods to connect the main beams in the two decks. The present invention has comfortable low deck with excellent permeability, box beams as the main beams for fast and convenient large section installation, low deck suspended to the upper deck capable of being in different width for best structural effect and low cost, and completely new sightseeing effect.