High Strength Rust Proof Steel Girder Bridge

Girder bridges are the simplest bridge type in structure and consist of steel beams shaped to an I-section or box section, called a plate or a box girder bridge, respectively. This kind of bridges are comprised of deck slabs, on which vehicles and people pass, and of main girders supporting the deck slabs. Deck slabs include RC deck slabs, steel deck slabs, composite deck slabs, and PC deck slabs. This system is stabilized by cross girders and cross bracings at certain intervals.

Bridges where the deck slabs and the main girders work together to resist loads are called Composite Girder Bridges.

A plate girder is a built up I-beam section, used to carry heavy loads. It is made by riveting or welding the steel plates in I-beam shape. Spans of 9.15 m and above are made with web plates and flange plates to form built up beam or I-section.

In general, effective spans of BUG are of about 25 to 150 meters.

It is mainly constructed in the areas where there is very high traffic and the bridge is to be constructed for a longer span.