Box culverts or U-shaped precast concrete culverts are structures that are highly durable, strong and flexible solutions for applications such as road crossings over waterways and flood prone areas, housing of underground services, underpasses, bridges, tunnels, storage or drainage systems.
Box culverts offer an ideal solution for drainage culverts where the standard concrete pipe products aren’t capable of maintaining, levelling and passing a given water flow rate as effectively.. Civilcast’s precast concrete culverts are also suitable for difficult site conditions as installation requires minimal excavation and backfill.
Concrete Culverts are a quick, cost-effective structural solution for various applications. Base slabs and link slabs are also available upon request. Civilcast Culverts can also be used as inverted culverts with link slabs for electrical applications.
Civilcast Box culverts are ideal for are ideal for bridging flow crossings or where hydraulic head is limited. Box culverts can be configured to have less impact on upstream water levels and downstream flow velocities than equivalent pipe structures. Precast construction means that traffic may use the installation immediately after placing and back-filling whereas in-situ construction will require a period for curing prior to stripping forms ready for use. Due to their ability to tolerate heavy wheel loads even with no overfill in place, precast box culverts are superior to most alternative systems which require compacted overfill in place before loading is applied. Concrete Box Culverts can also be used for the following: