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Culvert Bridges

Corrugated Steel Pipe

Large Corrugated Steel Pipe Culvert being installed under road. Large Corrugated Steel Pipe Culvert being installed under road.

The optimum combination of strength, flexibility and performance.

Corrugated Steel Pipe (CSP) is the material of choice for Culvert Bridge projects. It will not crack under impact loads or vibrations due to the inherent strength of steel and the flexibility of the corrugated pipe section. The high ring compression of the pipe absorbs and transfers the load to the surrounding soil around the entire circumference. The beam strength maintains the grade and line of the structure by bridging inequalities of the trench bottom and side fill.


  • Economical, strong, lightweight and easy to install
  • Variety of sizes, thicknesses and materials
  • Complete line of standard and specialized fittings and accessories
  • Available in Round Pipe or Pipe Arch Profiles
  • Can be used to reline existing systems
  • Full engineering support and field service
  • Approved to CSA Standard G401-07


  • Culverts
  • Drainage Systems
  • Stormwater Systems
  • Fish Passages
  • Conveyor Covers and Overcasts
  • Ventilation Systems
  • Utilidor Systems
  • Culvert Relines

Optional Coatings

Providing a service life of 25 to 100+ years, AIL offers three factory-applied finishes to meet your performance and hydrology considerations:

  • Galvanized (25 years)
  • Aluminized Type 2 (75 years)
  • Polymer-Laminated (100+ years)

Soil conditions and a variety of other site/application factors can influence your choice of CSP coatings. An environmental assessment will help you select the appropriate coating to meet your Design Service Life requirements.

Galvanized - Standard service life of 25 years

Corrugated Steel Pipe with Galvanized Coating. Galvanized Steel is the standard finish for all Corrugated Steel Pipe (CSP) and performs well in low-abrasion conditions.


Aluminized Type 2 - Service life of 75 years

Corrugated Steel Pipe with Aluminized Coating.For more corrosive environments, Aluminized Type 2 coating offers the superior corrosion resistance and surface characteristics of aluminum with the strength and economy of steel.

Polymer-Laminated - Service life of 100+ years

Corrugated Steel Pipe with Polymer-Laminated Coating. Polymer Laminate is a tough, heavy-gauge film that is laminated to both sides of galvanized steel to produce a corrosion and abrasion barrier for the most aggressive environments. Polymer Laminate CSP will stand up to high concentrations of acids and alkalis.

Corrugated Steel Pipe wall thicknesses and profiles

AIL’s Corrugated Steel Pipe comes in a variety of corrugation profiles and thicknesses to meet a wide range of structural design applications.

CSP thicknesses are 1.3 mm, 1.6 mm, 2.0 mm, 2.8 mm and 3.5 mm.

Corrugation profiles available are 38 x 6.5 mm, 68 x 13 mm, 76 X 25 mm and 125 X 25 mm, which can be ordered in various sizes and thicknesses.

AIL’s CSP is available in 6 m to 15 m custom lengths.

13 x 68mm

25 x 75mm

25 x 125mm


With three different Coating options and many different configurations, AIL’s Corrugated Steel Pipe is suitable for many types of applications.

AIL’s Corrugated Steel Pipe in dam diversion project.
Interior view of large Corrugated Steel Pipe.
Coupling band being installed on large Corrugated Steel Pipe.
AIL carries a large inventory of Corrugated Steel Pipe.
AIL plant supervisor inspects Corrugated Steel Pipe.
Installation of Polymer-Laminated Corrugated Steel Pipe.
Large Polymer-Laminated Corrugated Steel Pipe at AIL plant.
Polymer-Laminated Corrugated Steel Pipe in golf course application.

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AIL-723 cover display

Learn more about AIL's Corrugated Steel Pipe

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