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Our Products


Precast Box Culverts

Box Products

Box Culvert Products

Standard Boxes (3’x2’ – 12’x12’)

Box Culvert Applications

  • Storm Culverts
  • Storm Drains
  • Underground Detention
  • Utility Tunnels
  • Pump Stations/Wetwells
  • Walkways
  • Channel Liners

Benefits – Precast Concrete Box

  • National Design Standards
  • Product Strength Verified Prior To Delivery
  • Ease Of Installation
  • Speed Of Installation
  • Design Versatility


  • Bedding: 3” - 4” of slightly yielding granular material to provide uniform support over bottom of box
  • Multicell installations require some means of positive lateral bearing between boxes, compacted earth fill, granular backfill,
    flowable fill, grouting, etc.

BILGE Solutions - Products use

Preparation of the Bed

Set Box Sections

Immediate Backfill & Open Roadway

Precast Concrete Box Design