With superior strength and durability, precast box culverts provide a versatile and economical alternative to the cast-in-place concrete bridge. Amazingly adaptable, box culverts are available in multiple sizes and can be installed in single, double-cell or multi-line configurations.
Common uses include underpasses, service tunnels, subways, outfalls, bridges, stream culverts, material handling, utility storage, chimneys, vertical storage, watertight holding tanks and more. With the installation of precast concrete box culverts, most projects can be completed in a fraction of the time because the structures arrive on the jobsite ready to install. There’s no need to build forms, wait for good weather, pour concrete, and wait for it to cure. Precast box culverts save considerable time and labor expense over the cast-in-place option.
When it comes to box culvert, we can make anything. We can even cast in A-LOK gaskets to create watertight pipe-to-box culvert connections. We can also cast dowel bar couplers into the box culvert walls, which allow the contractor to thread rebar into the DBR and easily connect poured-in-place walls to the box culvert.
Large Box Culvert
Cemcast Pipe and Precast can make virtually any size of box culvert as long as it can be hauled on a trailer by a truck. These structures provide the ideal solution when there is limited clearance. We strongly suggest using box culverts instead of arch pipe for any application requiring greater flow than a 60” arch pipe can deliver. We can make any span with as little as 2.5’ of rise.
Small Box Culvert
Small box culvert runs are ideal in many situations, and we can manufacture boxes as small as 2.5’ x 2.5’. One of our installations took place at a local country club, which wanted a structure equivalent to a 48” round pipe that would be completely hidden. We created specialty end sections that precisely match the existing slope to preserve the aesthetics of the landscape and hide the drainage structure from view.
Specialty Box Culvert
Construction projects often include special circumstances that call for custom products. This is where Cemcast Pipe and Precast really shines. Our first box culvert job was actually the most involved box culvert we have ever made. The basic structure was a 6’ x 6’ box with four lines of boxes to span a creek. The engineer designed the boxes to have walls poured on the ends of them. Because of this, we needed to L bend #6 rebar and extend it from the side of the box culvert and from the top of the lid.
The middle of the box was a double bell allowing us to pour all end sections with the same joint. To complicate things further, the engineer specified the end sections to be 4’ of box culvert with haunches cast monolithically with a 2’ flat area that extended like toes beyond the box culvert edges. The project involved plenty of planning, but it went extremely well. Once installed, the contractor poured walls around the precast box culvert and then installed large gates over the openings of the box culvert system to prevent Crow Creek from flooding the City of Aberdeen.
We use our box culvert forming system to make vaults with haunches or square corners in single-cell or twin-cell configurations. Available vaults are: air release, vacuum, valve, meter, electrical, wet wells, and valve pits.