The invention discloses an anti-deformation device for a bridge. The anti-deformation device comprises a supporting column, a fixing plate is fixedly connected to the top of the supporting column, anda smooth
gasket is fixedly connected to the center point of the top of the fixing plate. First sliding rails are fixedly connected to the positions, located on the left side and the right side of thesmooth
gasket, of the top of the fixing plate correspondingly. According to the anti-deformation device, by arranging the first sliding rails, first baffles, first sliding blocks, first limiting blocks, first telescopic rods, first springs, fixing strips, supporting plates, second sliding rails, second sliding blocks, second baffles, second limiting blocks, second telescopic rods, a second springs, third telescopic rods, third springs, a telescopic column, a limiting plate, a middle spring, bearings, a fixing rod, a fixed rotary shaft and rollers, the anti-
deformation effect of the anti-deformation device becomes better, the work burden of workers is relieved, bridge deformation caused by external force is avoided, the service life of the bridge is prolonged, and great convenience is brought to passage of people.