Steel bridge is one of the widely used bridges in modern society, it has various advantages such as light weight, large span, green environmental protection, short construction period, etc., but it is easy to rust in use or storage. With the development and application of new materials such as weathering steel and anticorrosive coatings, they can play a protective role in extending the durability of Bridges. This paper introduces the corrosion mechanism of steel bridge and different corrosion types. Based on the comparison of corrosion protection measures at home and abroad and the current situation of their application, this paper describes the recommendation and summary of atmospheric protection measures for steel Bridges in different countries. The production and process of weathering steel in China has reached the level of normal use, but it is slightly behind the developed countries in terms of impact toughness, comprehensive stability, environmental friendliness and standardization. China's anti-corrosion coating technology is developing synchronously with foreign advanced countries, and the research and formulation of new materials have reached the same level as developed countries, but in the environmentally friendly, anti-corrosion construction technology and management level of anti-corrosion materials, it is still necessary to absorb foreign advanced experience, and the quality of the material and the advancement of the construction process need to be further improved.

CICTP