Precast Box
Culvert

High-strength and reliable precast RCC box culverts, engineered for road and rail infrastructure, pedestrian underpasses, and utility conduits.
Get a Quote
Manufactured to IS 10292:2019 and Indian standards
Precast box culvert India
Manufactured to IS 10292:2019 and Indian standards
Fast lead times in stock Bespoke sizes available Heavy duty load rated

What is a Precast Box Culvert?

Precast box culvert supplier in NCR

A precast reinforced concrete box culvert is a factory-manufactured rectangular RCC frame structure with heavy wall, used to convey water, stormwater, or drainage flows beneath roads, railway embankments, and other infrastructure.

Unlike circular pipe culverts, a box culvert provides a large low-profile hydraulic cross-section with a flat top slab capable of carrying IRC:6 design vehicle loads, making it the preferred solution wherever culvert depth is constrained.
Engineered for Strength

Structurally designed to carry and withstand IRC:6 vehicular, rail, and earth loads. Built with high-performance concrete.

Precision Engineering

Manufactured in controlled factory environments, ensuring unmatched consistency, accuracy, and tolerances.

5x Rapid Installation

Precast manufacture eliminates site curing delays, reducing construction time from weeks to days.

Resilient Versatality

Modular design, load-bearing capacity, and year-round installation capabilities ideal for drainage, underpasses, and utility tunnels.

Standards & Compliance

Strict structural integrity, water-tightness, and durability to comply with Indian loading conditions for highways and railways.

Built for Longevity

Manufactured using HPC, corrosion-resistant reinforcement, and robust jointing tech to ensure long-term durability and sustainability.

Highway Road Crossings & Railway Underpass

Precast RCC box culverts are the standard solution for seasonal and perennial stream crossings on National Highways, state roads, PMGSY rural connectivity roads and under railway embankments for road underpasses.

Urban Stormwater Corridors & Embarkment Drainage

Urban drainage masterplans under Smart Cities Mission, AMRUT, and state UIDSSMT programmes specify precast RCC box culverts for covering existing open nalas to create covered stormwater corridors beneath urban roads.

Underground Conduits & Cable Trenches

Box culverts house optical fibre, electrical cables, and service ducts beneath commercial campuses and institutional developments, protecting critical infrastructure from surface loads while keeping landscapes clear and unobstructed.

Installation Guide

Excavate to formation level and lay M15 PCC blinding of minimum 150mm depth on compacted sub-grade. For poor bearing soils (black cotton soil, filled ground, or low bearing capacity alluvial soils), increase bed thickness or consult geotechnical recommendations. Invert levels and box culvert skew alignment must be verified against approved drawing before foundation concrete is placed.

Lower box culvert units using crane with approved lifting lugs. Place units from inlet to outlet (downstream to upstream). Apply elastomeric joint sealant to tongue-and-groove interfaces before final unit closure. For culverts below water table or in groundwater protection zones, apply external self-adhesive bituminous waterproofing membrane (minimum 3mm) over all joints after placement. Test watertightness before backfilling.

Construct inlet/outlet headwalls and wingwalls per approved structural drawings before backfilling over barrel. Backfill in 200mm compacted layers. Do not use heavy plant within 600mm of box walls until minimum 600mm cover is achieved over top slab. Minimum fill over top slab before trafficking: 600mm for National Highways per IRC:122. Provide approach slab where specified.

Fast lead times in stock Bespoke sizes available Heavy duty load rated

Your Next Precast Infrastructure Project Starts Here

Plant I
8 KM, Khasra No 66, Alawalpur Palwal Mathura Road, Palwal, Haryana – 121102, India
Plant II
1 KM, Khasra No 76, Gubhana Goyla Road, Gubhana, Jhajjar, Haryana – 124105, India
Plant III
11/2 Nangla Road, Vill-Sikri, Ballabgarh, Faridabad, Haryana – 121004, India
Corporate Office
506-507, 5th Floor, SSR Corporate Park, NH-19, Faridabad-121004, Haryana
Write to us
brhcindia@gmail.com info@brhcpipes.com
+91-9999012399

    Frequently Asked Questions

    What is the minimum concrete grade for box culverts on NHAI projects?

    IRC:122:2017 specifies a minimum concrete grade of M30 for precast box culvert barrel sections. BRHC's standard production uses M35 for all box culvert elements, with M40 available for aggressive ground conditions. Minimum cover to reinforcement is 75mm for all below-ground elements, increasing to 40mm for the top slab surface where not buried. These requirements are mandatory for NHAI acceptance under Indian procedures.

    What minimum fill cover is required before trafficked use on National Highways?

    Per IRC:122:2017, a minimum 600mm of compacted fill cover over the box culvert top slab is required before the structure is open to traffic on National Highways. For temporary construction traffic, a minimum 300mm of compacted fill is required before light vehicle crossings. Do not allow HCV crossings until 600mm cover is achieved. BRHC provides structural data sheets showing permissible loading at varying fill depths — contact our technical team for the relevant sheet.

    Do BRHC box culverts include headwalls and wingwalls?

    Standard BRHC supply covers the barrel sections only. Headwalls, wingwalls, and apron slabs are designed project-specifically by the structural engineer and typically cast in-situ or precast to project drawings. BRHC can supply precast headwall and wingwall elements designed to project structural drawings — discuss your project scope with our sales team at tender stage.