Highway bridge guardrail

The utility model discloses a highway bridge guardrail, and relates to the technical field of bridge guardrails. A highway bridge guardrail comprises an extending rod, a support, side plates, rotating rods, limiting seats, limiting plates, inserting rods, reset springs, push plates and inserting openings, the extending rod is inserted into the support, the two ends of the lower portion of the support are hinged to the side plates through the rotating rods, the limiting seats are arranged at the ends, between the side plates, of the support, the inserting openings are formed in the limiting seats, and the limiting plates are arranged below the positions corresponding to the inserting openings. An insertion rod is inserted into the limiting plate, a push plate is arranged on the insertion rod below the limiting plate, and a reset spring is arranged on the insertion rod below the push plate. According to the utility model, the bracket can be directly rotated to realize angle adjustment and fixation, so that the