Bridge guardrail

The utility model discloses a bridge guardrail, and relates to the technical field of bridge guardrails. A guide roller; the guide rollers are rotatably connected to the buffer mechanisms, each buffer mechanism comprises a fixing block, a lower groove, a mounting block and an elastic part, the fixing blocks are fixedly mounted on the base, the lower grooves are formed in the fixing blocks, the mounting blocks are slidably connected into the lower grooves, and the elastic parts are arranged in the lower grooves. The elastic piece is installed in the installation block, and one end of the elastic piece abuts against the interior of the lower groove. Wherein a core shaft is arranged at the end part of the guide roller. The guide roller assembly has the advantages that when the guide roller is stressed, the elastic piece is synchronously stressed and compressed, so that the guide roller can move in the direction away from the impact direction, rigid impact generated by impact can be buffered at the moment, deform