Reinforcing device for bridge

The utility model discloses a bridge reinforcing device relates to bridge reinforcing technical field, including first bridge pier, clamping mechanism and diagonal rod, the outer surface of first bridge pier is connected with one end of crossbeam, the middle part of the lower surface of crossbeam is fixed with the support pillar, the outer surface of first bridge pier and the outer surface of second bridge pier are both provided with the groove, and the diagonal rod is fixed with the support pillar. The clamping mechanism is located on the outer side of the groove, one end of the first clamping plate is rotationally connected with the second clamping plate through a rotating shaft, and a first threaded hole is formed in the fixing plate. The first clamping plate and the second clamping plate are arranged, the positions of the first clamping plate and the second clamping plate are limited through the grooves, the clamping mechanism is prevented from sliding on the first pier, the installation firmness of the c