- Made in North Devon since 1973
- BSI Kitemark ready-mixed concrete
- Manufactured to BS EN 14992
- UK-wide & European delivery
Civils · drainage · highways
Box Culverts.
Up to 3630 × 2630mm (11ft11in × 8ft8in). Bespoke walls and reinforcement to BS EN 14844.
What size box culvert can WCCP cast?
What size box culvert can WCCP cast? We have the capability to manufacture precast concrete culverts up to 3630 mm × 2630 mm (11ft11in × 8ft8in) overall dimensions in 1000 mm (3ft3in) section widths. Wall thicknesses and reinforcement to suit the application, designed to BS EN 14844:2006+A2:2011.
Precast box culverts up to 3630 × 2630mm (11ft11in × 8ft8in) in 1000mm (3ft3in) section widths, cast to BS EN 14844:2006+A2:2011 in C40/50 concrete with walls and reinforcement designed to suit. Suits highway, agricultural watercourse, underpass and SuDS schemes. Bespoke skews, sawn outer faces and inlet/outlet detailing on every order. Lead time 6-10 weeks; Network Rail proven (Henley-on-Thames).
- · BS EN 14844
- · Up to 3630 × 2630mm (11ft11in × 8ft8in)
- · 1000mm (3ft3in) section widths
- · Bespoke walls / rebar
- · Sawn outer faces option
- · Network Rail proven
Specification
Sizes, walls and loadings.
Catalogue box culvert sizes for typical schemes. Bespoke spans, skews and loadings on application.
| Specification | Value |
|---|---|
| Maximum overall size | 3630 mm × 2630 mm (11ft11in × 8ft8in) |
| Section width | 1000 mm (3ft3in) (units sit side-by-side along the run) |
| Standard | BS EN 14844:2006+A2:2011 (precast box culverts) |
| Wall thicknesses | To suit application — designed for the loading and reinforced accordingly |
| Concrete grade | C40/50 (BS 8500-1:2023) |
| Bespoke detailing | Outer faces can be sawn or finished to spec — e.g. for visible bridge applications |
Each culvert is engineered to the application — send the section, fill height, loading and crossing layout and we will return a culvert design with wall thicknesses, reinforcement schedule and weight calculations.
On site
On-site installation.
Where they go
Common applications.
From a 1m (3ft3in) drainage culvert under a farm track to a 3.6m (11ft10in) bridge section on a road scheme — same yard, same paperwork.
- ·Watercourse and stream crossings under farm tracks
- ·Highway and rail drainage culverts
- ·Livestock and stock-grazing underpasses
- ·Pedestrian and cycle underpasses
- ·Bridge deck sections on accommodation crossings
- ·Service tunnels for utilities and cable runs
- ·Surface-water attenuation tank sections
Standards & certification
Engineered to current code.
- BS EN 14844:2006+A2:2011
- Precast concrete box culverts — the live product standard for our range.
- BS EN 13369
- Common rules for precast — factory production control.
- BS EN 1992 (Eurocode 2)
- Concrete structural design — section, joint and bearing checks.
- BS 5400 / BS EN 1991-2
- Highway loadings — HA, HB30, HB45 traffic loads.
- BS 8500-1:2023
- Concrete spec — designated mixes for the exposure class.
Configure your culvert
Send section, fill height and loading — we will quote inside 24 hours.
Related products
Often ordered alongside.
Common questions
What people ask about culverts.
Five questions we answer most weeks. If yours is not here, ring the yard.
What is the maximum culvert size you can cast? +
Up to 3630mm × 2630mm (11ft11in × 8ft8in) overall dimensions in 1000mm (3ft3in) section widths. Wall thicknesses and reinforcement are designed to suit the loading, in accordance with BS EN 14844:2006+A2:2011 (precast box culverts). Larger spans on application.
What are culverts used for? +
Underpasses, stream crossings, vertical chambers, attenuation and storage tanks. In early 2024 we manufactured and supplied two units forming a waterway beneath a footbridge for the railway station at Henley-on-Thames — built to the customer's requirements with the outer faces finished to spec.
How are wall thickness and reinforcement determined? +
Each culvert is engineered to the loading and section. We work to BS EN 14844:2006+A2:2011 with structural design to BS EN 1992 (Eurocode 2). Send us the section, the fill height and the live load and we will return a culvert design including wall thickness and rebar schedule.
Can the outer faces be finished? +
Yes — outer faces can be sawn or finished to specification. We did exactly that on the Henley-on-Thames railway station job for visible faces under a footbridge. Tell us the architectural finish required when you brief the job.
Lead time? +
Box culverts run 6 to 10 weeks depending on size, reinforcement complexity and current bookings. Talk to us early on a programmed scheme — culverts that need rebar drawings approved can be on the critical path.
How would you like it?
Supply-only or fitted — Box Culverts
Supply only
Per-unit / per-metre supply
Lead time: 6–10 weeks
- Box-culvert sections to BS EN 14844:2006+A2:2011
- Wall thicknesses and reinforcement designed to your loading
- Designer-stamped Eurocode 2 calcs
- Delivery on our HIAB / low-loader
- Excavation, blinding and bedding
- On-site crane and setting labour
- Headwall, wingwall and apron units
Fitted (supply + install)
Supply + install crew
Lead time: 10–14 weeks (incl. site slot)
- Everything in supply only
- Four-man install crew with 50-tonne (about 110,000 lb) crane
- Joint sealing and section levelling
- Excavation, dewatering and bedding stone
- Reinstatement, traffic management and surfacing
Every culvert is engineered to its loading and section. Send the section drawing, fill height and live load and we will return a culvert design with rebar schedule and weight calcs.
BIM-ready packs
Box culverts — engineer pack.
Direct downloads where available, with the rest sent direct from engineering on request. All packs versioned to BS EN 14992 / BS 5502-22 where applicable.
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AutoCAD .dwg
RequestPlan, section and elevation — 2D drawings.
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Revit .rfa
RequestParametric Revit family for BIM.
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IFC4 .ifc
RequestOpen BIM exchange format.
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PDF spec sheet .pdf
RequestSpecs, loadings, certification refs.
Need something else, or a stamped drawing? Email engineering@wccp.co.uk — typical reply within 24 working hours.
Ready to spec it?
Send section, fill height, loading and headwall details. Quote and lead-time same day.