Short answer: Bridges and infrastructure lean on structural carbon and high-strength steel for girders and decks, weathering steel for exposed spans that need little upkeep, stainless for bearings and joints, and galvanized steel for fasteners, with grade chosen for strength, fatigue life and long service.
At a Glance
Girders, Decks and Strength
Main members use weldable structural steel with predictable strength; the grades are in our Carbon Steel Supplier, data in our Strength Comparison, limits in our Tolerances Guide and base types in our Types of Carbon Steel.
Weathering Steel and Longevity
Exposed spans use weathering steel for a stable patina and low upkeep; the option is in our Weathering Steel Guide, corrosion care in our Corrosion Resistance Guide, the comparison in our Galvanized vs Stainless page and packing in our Export Packing Guide.
Bearings, Joints and Wear
Bearings and expansion joints need stainless for wear and corrosion; the grade pick is in our Stainless Steel Supplier and 304 vs 316 guide, fatigue in our Fatigue Guide and welding in our Stainless Welding Guide.
Fasteners and Protection
Fasteners and trim are galvanized for rust life; the zinc base is in our Galvanized Steel Sheet and What is Galvanized Steel, finish in our Surface Treatment Guide and the design angle in our Construction Structural Guide.
Get a Quote
Tell HXSCO your requirements and we will respond with a competitive quote and lead time.
Frequently Asked Questions
Structural S355 or higher-strength S460, weldable and certified.
It forms a stable patina and needs far less repainting.
Bearings, expansion joints and exposed architectural elements.
Galvanized or weathering coatings stop rust in the field.
Fatigue at connections — design and grade choice matter.
Build Infrastructure with HXSCO Metal
HXSCO supplies structural, weathering and stainless steel for bridges and infrastructure. Send the member list and grade and we will quote.