A full range of corrugated metal structures for virtually any application.
AIL has been value-engineering cost-effective structural plate solutions for over 50 years. Our high-quality products, engineering excellence and innovative designs are key to delivering the best results for our clients. We manufacture a complete range of plate bridges to handle every need and budget. Our corrugated metal structures ship and install easily with local crews and equipment. They offer many advantages over their concrete equivalents or traditional site-built beam bridges, and they offer a wide range of enhanced aesthetic treatments —inside and out.
Structural Plate Bridges & Tunnels
Ultra•Cor Structural Steel Plate
Taking engineered structural plate to new dimensions in capability and performance.
Super•Cor Structural Steel Plate
Choose deep-corrugated Super•Cor Structural Steel Plate for larger applications, like box culverts and culvert tunnels.
THE EDGE Four-Flange Structural Liner
Give your steel tunnel liner and shaft liner projects THE EDGE with the latest innovation in structural plate construction.
Bolt-A-Plate Structural Steel Plate
Standard-corrugated Bolt-A-Plate is ideal for medium to smaller sized bolted structural plate bridges and structural plate arches.
Dur•A•Span Structural Aluminum Plate
Open bottom box culverts and other structures for saltwater and aggressive soil applications.
AIL Geotextile Reinforced Soil (GRS) Bridges
Pre-engineered, open-bottom soil bridge solutions that are fast, economical and fish/wildlife-friendly.
Best•Kote Polymer Coating
Optional coating extends the service life of structural steel plate to over 75 years.