Steel Grid Bridge Decking

L.B. Foster's cost-efficient grid reinforced concrete deck and open steel grid flooring systems are easy to install and maintain with minimum interruption to traffic during new construction or bridge repair.

Concrete-filled steel grid bridge decking provides a far greater life expectancy than reinforced concrete and its durability resists heavy traffic, weather and deicing agents. L.B. Foster's lightweight, yet strong, open steel grid flooring is the answer for movable bridges or other conditions where minimizing dead load is a major consideration.

Whether it is supplying a complete bridge grid flooring package, specially designed bridge drainage systems, bridge railing, custom pedestrian railing or building a complete bridge, L.B. Foster is ready to successfully handle the unique requirements of your next project.

Open Grid Steel Bridge Decking

L.B. Foster’s Open Grid was developed to meet increasing performance and reliability needs, as highway traffic volumes and truck loadings continue to grow, without adding additional deck dead load. Open grid design durability is linked directly to transverse stiffness — the ability to transmit load from one main beam to adjacent ones.

5-Inch 4-Way Modified Open Grid - PDF
5-Inch 4-Way HD Modified Open Grid - PDF
5-Inch RB 4.2M Open Grid - PDF
5-Inch RB 6.2M Open Grid - PDF
5-Inch RB 8.2 M Open Grid - PDF

Half Filled Grid Decks

Half Filled Grid Decks or welded steel grid decks partially filled with concrete are lighter in weight than full depth concrete filled grids yet offer similar span capacities.

5-Inch RB 6.1 Half-Filled Grid w/ Overfill - PDF
5-Inch RB 6.2 Half-Filled Grid w/ Overfill - PDF
5-Inch RB 8.2 Concrete Half-Filled Grid w/ Overfill - PDF
5-Inch RB 10.1 Concrete Half-Filled Grid w/ Overfill - PDF
5-Inch RB 10.2 Concrete Half-Filled Grid w/ Overfill - PDF
6.5 inch RB Half Depth - PDF

Fully Filled Grid Decks

Fully Filled Grid Decks or welded steel grid decks with full depth concrete infill are the oldest grid reinforced concrete decks on the market. This system can be designed to span up to approximately 10 feet. This grid is an excellent choice where dead-load reduction is not a primary goal but speed of construction, long term durability and low cost are key decision making factors.

4 1/4" Interlock with Concrete Overfill - PDF
3" Tee with Concrete Overfill - PDF

EXODERMIC™ Decking

Exodermic™ Decks or unfilled steel grid decks composite with a reinforced concrete slab are the most structurally efficient grid deck systems available, and offer increased span capacities and a slight weight advantage over half filled grid decks. Common configurations shown in the design table can span up to about 15 feet, but other WT main bar sizes can be used to achieve longer spans.