Novel bridge and culvert reinforcing device

The utility model discloses a novel bridge and culvert reinforcing device which structurally comprises a connecting side rod, a top connecting plate, a connecting plate, a bottom connecting rod and a supporting plate body, the novel bridge and culvert reinforcing device can be used after the supporting plate body is fixedly installed on a bridge and culvert through the top connecting plate, and when a screw rod on the top connecting plate is connected, the connecting plate is connected with the connecting side rod. Under the extrusion of the threaded sleeve, the connected gasket is in contact with the sealing mechanism and extrudes a pressed ball body on the sealing mechanism, so that an air pushing block on the pressed ball body moves in the shell, air is pushed to flow to a pressed groove, an elastic connecting belt on the pressed groove is extruded, and the elastic connecting belt is stressed to expand, so that the elastic connecting belt is in contact with the embedded screw rod; and the connecting groove