Precast Box Culverts

A four-sided box culvert has a base slab that allows for a smooth precast concrete invert in place of the natural streambed. Fish baffles can be provided in the bottom of a four sided box culvert. Headwalls, sloped end sections and cut-off walls are available for project specific designs. Four sided box culvert units are often used as permanent service tunnels for underground services and piping.

A box culvert may be either three or four sided. Three sided culverts allow for brook and stream crossings maintaining the natural streambed. Typically the legs of a three-sided culvert are supported on concrete footings.

Precast box culverts are high quality, low maintenance concrete structures that have a large number of applications including storm sewers, service tunnels, or small bridges for stream crossings.

Commonly used as drain storm management