ABSTRACT
Weathering steel is widely used in bridge engineering due to its excellent corrosion resistance, which is provided by a naturally forming, self-protective oxide layer known as patina. This characteristic significantly reduces maintenance needs and eliminates the requirement for traditional protective coatings, contributing to more sustainable construction practices. The article presents an overview of the key mechanical and durability properties of weathering steel, along with important design and detailing considerations necessary to maximize its performance, especially regarding fatigue strength and protection against moisture accumulation. It also highlights recent applications of weathering steel in Poland, focusing on bridge structures constructed between 2020 and 2023. These examples demonstrate the material's adaptability to various structural solutions, including hybrid girders, and underline the economic and environmental benefits of using weathering steel. The article aims to provide a comprehensive understanding of weathering steel's role in modern bridge engineering and promote its further adoption in sustainable infrastructure projects.
