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  • SPECIALISTS IN CONCRETE CONSTRUCTION

  • SPECIALISTS IN CONCRETE CONSTRUCTION

  • SPECIALISTS IN CONCRETE CONSTRUCTION

  • SPECIALISTS IN CONCRETE CONSTRUCTION

  • SPECIALISTS IN CONCRETE CONSTRUCTION

CIVIL CONSTRUCTION.

At Formfour, we specialise in the construction, repair, and maintenance of bridges and culverts throughout Christchurch, Canterbury, and the wider South Island. Our experienced civil construction team works across local authority, state highway, and private infrastructure projects — delivering reliable solutions in even the most challenging environments.
- Bridge Construction & Repairs We construct small to medium-span bridges for rural access, local roads, and public infrastructure. Our team has delivered high-quality concrete and steel structures for councils, developers, and Tier 1 contractors.
- Bridge services include:
New bridge construction (formwork, piling, reinforcing, concrete placement)Pedestrian, farm and road bridge buildsSeismic strengthening and structural repairsConcrete crack injection and bearing replacementsJoint replacement and deck worksState Highway bridge repairs under NOC contracts
We’re experienced at working in live traffic environments with full safety and environmental compliance, often under tight timeframes and restricted access.
- Culvert Installation & Replacements Formfour has delivered numerous culvert construction projects, including major infrastructure works requiring precise coordination and environmental care.
Our culvert services include:
Installation of Humes box culverts, round pipes, and precast systemsStormwater and drainage culvert constructionCulvert headwall and wingwall constructionRemoval and replacement of failed or undersized culvertsCoastal and high groundwater culvert works
We’ve worked in coastal zones, earthquake-damaged areas, and alongside live rail and highway corridors — including culvert installations under the NCTIR rebuild programme following the Kaikōura earthquake.
- Emergency & Infrastructure Support As approved contractors under Network Outcomes Contracts (NOC), Formfour supports emergency and planned infrastructure works. Our crew is equipped to mobilise quickly for culvert and bridge damage response, ensuring safe and compliant reinstatement with minimal disruption.
Need trusted bridge and culvert contractors in the South Island?Contact Formfour to discuss your next infrastructure project. We combine technical skill, practical experience, and a commitment to safety and quality to deliver solutions that last.

Please click on a link below to browse selected projects:
School
Petrol Stations
Sports
Valve Chambers
LPC
NCTIR
Higgins Asphalt Plant
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