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Bridge Projects

Whether the hidden rebar and substructure, girders, rails, or a beautiful truss; hot-dip galvanizing provides long-lasting maintenance-free bridges.

Steel is a principal construction material in the bridge market due to its unmatched strength-to-weight ratio. Because steel used in the bridge market is constantly exposed to weather, deicing chemicals, and atmospheric pollutants, it must be protected. Hot-dip galvanizing has been successfully used to combat corrosion in bridges since the 1800s. Whether the superstructure of a traffic bridge, the backbone of a pedestrian crossing, or a beautiful truss igniting the landscape; hot-dip galvanized steel provides long-lasting maintenance-free protection for decades.

Daily trips taken on structurally deficient bridges
178 Million
Dedicated funding in BIL for Roads & Bridges
$110 Billion

In the last few years, there has been renewed interest in the steel bridge market. The reason for that is first and foremost the proven history of long-standing steel bridges throughout North America. There also is more interest in long-term corrosion protection methods, such as hot-dip galvanizing for those bridges. The Short Span Steel Bridge Alliance (SSSBA) is a collaborative group of associations, fabricators, steel producers, coaters, and county engineers working to promote the economic benefits of building steel bridges between 40 and 140 feet.

The SSSBA has developed an innovative online tool eSpan140 to facilitate the design of short-span steel bridges, which coupled with economic case studies is beginning to drive more specifications to steel. Bridges of this size, or modular sections of this size for larger bridges, are a great fit for hot-dip galvanized steel. However, when bridges or spans exceed these lengths, metallizing (a thermal zinc coating) is a great alternative that can be used in conjunction with galvanized steel (on the smaller, ancillary parts).

Bridge Resources

  • Pregressive dip calc

    Progressive Dip Calculator

    This is a tool used to confirm whether an article of known dimensions can be progressive-dip galvanized within a galvanizing kettle of known dimensions.

  • SSSBA ad

    Short Span Steel Bridge Alliance (SSSBA)

    The SSSBA is a group of bridge industry leaders who have joined together to provide educational information on the design and construction of short span steel bridges up to 140 feet in length.

  • GSS Buffalo Creek

    Galvanized Steel Studies - Buffalo Creek Bridge

    All of the steel in the Buffalo Creek Bridge is galvanized. We interviewed the County & Chief Engineer on the project to learn why they chose HDG steel.

  • Card HDG bridges

    Design Guide: HDG Bridges

    Best practices to ensure the highest quality, longest lasting HDG steel bridges.

  • Card HDG Fasteners

    Hot-Dip Galvanized Fasteners

    This publication explains how and why hot-dip galvanized fasteners provide superior protection for connections, as well as some design considerations when using galvanized fasteners.