Culverts can be manufactured in either helibore pipe (up to 3.6m span/diameter) or bolted plate (up to 12m span/diameter). A wide range of profiles is also available including pipe, pipe-arch, arch, underpass and ellipse. View “Product range and sizing” within our bolted plate section for more details.

Stream culverts usually require a paved invert to protect against abrasion and this is normally in the form of in-situ concrete but other options such as Reno mattresses are sometimes used.

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