Super-Cor® Bridge

Combining the advantages of lightweight construction with the superior strength and durability of galvanised steel, Super-Cor® is the most internationally accepted and widely used corrugation profile on the market. The larger annular corrugations of Super-Cor® (381mm pitch and 140mm depth) provide nine times the stiffness of a conventional structural plate.

Ideal for medium-sized bridge construction applications Super-Cor® combines the advantages of lightweight construction with the superior strength and durability of deep-corrugated galvanised steel to create buried arch bridge spans that can reach 25m.

Super-Cor® is also the sensible economic choice for vehicle underpasses, bridges, railway underpasses, box culverts, underground storage, stream enclosures/crossings, fauna underpasses and mine portals.

Buried arch bridges, tunnels and other structures made from Super-Cor® carry loads through soil-structure interaction, meaning the bridge and the backfill soils act together to support the loads. Settlement tolerances for buried arch bridges are much higher than that of buried concrete bridges, allowing for lower foundation costs.

Note: CSP’s Super-Cor® is not a stocked item. A lead time for manufacture can be provided following the design and consultation process.

Please contact Steve Silby for more information:

Steve Silby – National Specification Manager

+64 27 327 7985

  • Premium, hot-dip-galvanised, deep-corrugated structural steel plate for medium-sized applications.Revolutionary alternative to conventional bridges.
  • Handles extreme loadings.
  • Easy to ship and install for remote locations.
  • Long-lasting and virtually maintenance-free.
  • Bottomless designs are more environmentally friendly.
  • Can reline older structures.
  • Available with a variety of footing and headwall/wingwall options.
  • Available with tested and approved protective coating systems.
  • Designed and manufactured to National Standards ISO 9001.
  • Spans can reach up to 25m
  • Corrugation profile of 381mm pitch x 140mm depth
  • Available in: Box Structures; Standard, Low, Medium or High Profile Arches; Rounds and Ellipses

Note: Design and supervision should be conducted by an experienced engineer. The site engineer is to ensure that assumptions made at the design stage are present on-site and that backfilling is in accordance with the specification.


Design, manufacture and Installation requirements for Super-Cor® are specified in AS/NZS 2041: Buried Corrugated Metal structures. This is a joint Australian and New Zealand Standard and has several parts. Those applicable to Super-Cor® are as follows:

  • AS/NZS 2041.1:2011 Buried Corrugated Metal Structures - Part 1 Design Methods
  • AS/NZS 2041.2:2011 Buried Corrugated Metal Structures - Part 2 Installation Methods
  • AS/NZS 2041.6:2011 Buried Corrugated Metal Structures - Part 6 Bolted Plate Structures