Con Cast Pipe’s three sided culverts, Tri-Span, are the ideal solution for applications that involve streams, creeks or other narrow waterways. Tri-Span geometry incorporates two attractive features for culvert design. First, Tri-Span has no bottom slab- it is specifically designed not to disturb the streambed, thus protecting the aquatic habitat. Second, Tri-Span’s flat top design is ideal for low cover applications where the depth of the road structure is limited. These environmentally friendly culverts are a cost effective alternative to full bridge construction. Multiple standard sizes are offered, that provide a full range of vertical & horizontal combinations. Rigid frame design with hinged supports help limit both lateral restraints and induced moments to the structure. Because they are precast, Tri-Span culverts allow for speedy installation and durability over the long run, making them the ideal option for many projects.

  • Small bridge construction and replacement
  • Roadway, railway and airport underpasses/overpasses
  • Stream enclosures
  • Pedestrian walkways

  • Not as dependent on the pipe-soil interaction for its structural strength, therefore is not as installation sensitive as other culvert materials.
  • 3 different installation options offered including precast wingwalls, precast headwalls and precast footings.
  • environmentally friendly- protects animal habitats.

  • Plant Prequalification Program
  • OPSS 1821 – Material Specification for Precast Reinforced Concrete Box Culverts and Box Sewers
  • CAN\CSA S6-06 – Canadian Highway Bridge Design Code
  • OPSS 422 – Precast Reinforced Concrete Box Culverts and Box Sewers in Open Cut
  • ASTM C1433 – Standard Specification for Precast Reinforced Concrete Box Sections for Culverts, Storm Drains, and Sewers
  • American Railway Engineering and Maintenance-of-Way Association (AREMA)
  • CSA A23.4 Precast Concrete – Materials and Construction