Disclosed are a bridge membrane waterproofing structure, a bridge membrane waterproofing material, and a bridge membrane waterproofing method. According to the present invention, the bridge membrane waterproofing structure comprises: a membrane waterproofing material to be applied on a concrete structure; and a multi-layer grid reinforcing material attached to the membrane waterproofing material, wherein the multi-layer grid reinforcing material comprises: a first non-woven fabric attached to the membrane waterproofing material; a first grid; a second non-woven fabric; a second grid arranged on the upper side of the second non-woven fabric; and a grid-type elastic grid support provided between the second grid and the second non-woven fabric. According to the present invention, even when a load is applied on a pavement material applied to a concrete structure, cracks can be prevented from occurring on a membrane waterproofing material applied to the concrete structure.;COPYRIGHT KIPO 2020
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