The present invention relates to an upper structure of an eco-bridge, comprising: a plurality of ?-shaped girders which are arranged to have intervals in a traverse direction and are held by an abutment, wherein a pair of webs extend upwards at a position spaced from at least one end of a lower flange so as to include a U-shaped receiving space whose upper section forms an aperture part; supporting girders arranged on the outermost side of the ?-shaped girders to have intervals in a traverse direction; a floor plate held on top parts of the webs of the ?-shaped girders such that the aperture part is opened and an upper side of a space between the ?-shaped girders is closed; L-shaped sidewalls whose vertical walls are integrated with an end part of the bottom plate so as to be supported and held by top parts of the supporting girders along with a top part of the outermost ?-shaped girder among the ?-shaped girders; and earth and sand with which spaces whose both sides are surrounded by the L-shaped sidewalls are filled. Accordingly, in spite of earth pressure of the earth and sand with which the eco-bridge is filled, structural stability may be secured at connecting parts between the girders and the sidewalls, thereby providing the upper structure of the eco-bridge, which can significantly reduce damage to or cracks in the sidewalls.;COPYRIGHT KIPO 2016
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