Steel Structural Plate

When stormwater structures, culverts, or buried bridges call for large spans and lasting performance, Lane’s Steel Structural Plate (SSP) offers the versatility, strength, and durability needed to get the job done. Manufactured in curved segments and assembled on-site, SSP is a proven solution for applications that exceed the practical limits of traditional corrugated steel pipe. 

Why Choose Steel Structural Plate? 

Durability That Goes the Distance 
Lane’s SSP systems are protected by a 3-ounce galvanized zinc coating (50% more than standard CMP), providing excellent long-term corrosion protection. Built to last, these structures are ideal for high-load, high-flow, and long-service applications. 

Strength Where You Need It 
With industry-standard 6″ x 2″ corrugations and plate thicknesses available through 1 gauge, SSP is engineered for heavy-duty applications and large-span requirements. It can be configured for arch, round, elliptical, and box culvert shapes. 

Built for the Jobsite 
Shipped in compact, nested bundles to reduce freight costs and handling time, Lane’s SSP is designed for fast and efficient field assembly using simple tools and light equipment—no welding required. 

Span Flexibility 
Steel Structural Plate becomes the preferred option when project spans exceed 12 feet or site access makes traditional pipe delivery and installation impractical. Its modular bolted design accommodates both horizontal and vertical loading conditions with ease. 

Applications 

• Stream and river crossings 
• Buried bridge alternatives 
• Box culverts 
• Grade separations 
• Large-diameter stormwater conveyance 
• Long-span drainage structures 
• Mine portals and underpasses 

Key Benefits

• Available in shapes and sizes to meet your design needs 
• 3 oz zinc coating for extended service life 
• Compact shipping = lower freight costs 
• Rapid on-site assembly 
• Meets or exceeds AASHTO and ASTM requirements 
• Backed by Lane’s expert design and field support teams