Steel has long played a key role in American construction efforts. Not only is steel lighter in weight than many other building materials on the market, but it also earns points for durability, affordability, and environmental friendliness. Still, bridge builders may struggle with whether to use more traditional weathering steel or increasingly popular hot-dip galvanized steel. Read on to discover how these options stack up.
Benefits and Drawbacks of Weathering Steel
Long a favorite among bridge builders, weathering steel offers numerous advantages over other building types. Strong and attractive, this material rusts in a way that provides protection against the elements. Builders refer to this as “useful corrosion.”
Still, the news about weathering steel isn’t all positive. Progressively corroding, weathering steel can deteriorate faster if moisture is present. To compensate for this loss of mass and strength, builders may need to use thicker sections of steel from the start. Additionally, salt air and humidity can damage weathering steel, resulting in accelerated corrosion.
Benefits of Hot-Dipped Galvanized Steel
Formed by dipping bare steel in molten zinc, hot-dip galvanized steel is a popular choice in bridge construction. Featuring the strength of weathering steel, hot-dip galvanized steel offers additional benefits, too. Barrier and cathodic protection mean that this material resists corrosion. As a result, this option requires less long-term maintenance than weathering steel. Additionally, hot-dip galvanized steel maintains its structure despite exposure to UV rays, snow, water, and soil and is 100 percent recyclable.
Trust U.S. Bridge With All Your Building Needs
As a bridge building leader, U.S. Bridge brings more than 80 years of engineering and manufacturing expertise to the table. We’re passionate about constructing bridges that withstand time and the elements while making use of materials that are safe for the environment. Ready to learn more about our products and services? Call our steel bridge experts today or contact us online for info.