Bridge expansion joint prevent seepage device

The utility model relates to a road and bridge construction equipment technical field, concretely relates to bridge expansion joint prevent seepage device. The utility model provides a pair of bridgeexpansion joint prevent seepage device sets up between the backplate of expansion joint both ends, prevent that seepage device includes the water drainage tank who is equipped with the cross section and is U type structure, the interface of cross section for the right angle structure is connected respectively at the both ends of U type structure, the interior angle of interface is equipped with the inner chamber, is equipped with adhered substance in the inner chamber, and water drainage tank is equipped with leading -in inclined plane with the junction of interface, and water drainage tank'sopen end is equipped with the obturator. The utility model discloses tensile resistance degree in the expansion joint is strong, and the life cycle is long, and is safe firm, the installation of beingconvenient for, be liable