Bridge Drainage Casting: Why FastFlow Meets EN1433 Standards

Bridge decks and highways demand more than just surface drainage – they need engineered systems that handle heavy loads, environmental stress, and long-term use.

Fowler & Holden’s FastFlow bridge drainage casting system is designed to meet these challenges head-on, while exceeding EN1433 compliance.

Here’s what makes it trusted by UK contractors, engineers, and public authorities.

Drainage System Overview

What Is EN1433?

EN1433 is the European standard for linear drainage systems used in vehicular and pedestrian areas. For bridge and highway use, components must:

Meet load class D400 or above.
Resist corrosion and water ingress.
Withstand freeze-thaw cycles.
Be secure, tamper-proof, and safe.

FastFlow is a Type-I drainage system, meaning both the grating and frame are designed to bear the load – ideal for bridges, roads, and carriageways.

Why FastFlow Exceeds Requirements

1. Cast for Strength

Each FastFlow unit is made from ductile iron and cast in-house at our Grimsby facility. The system is designed for:

Load Class D400 to F900.
Long service life with minimal maintenance.
Customisable profiles for bridge deck gradients.

2. Kitemark and Quality Assurance

FastFlow is BSI Kitemarked and tested to EN1433. We provide:

Third-party certification.
Batch traceability.
Dimensions to spec every time.

This makes us a preferred partner for frameworks and highway projects requiring full quality documentation.

Modular Design and Quick Installation

FastFlow’s modular design means:

Faster bridge deck installation.
Simplified storage and transport.
Easy replacement of individual units.

Whether you’re replacing legacy drainage or designing new spans, our castings reduce installation time – and downtime.

We also offer fabricated integration plates, grating locking mechanisms, and engineering support for deck interface design.

Why UK Contractors Choose Fowler & Holden

EN1433-compliant drainage systems.
Cast, tested and finished in the UK.
Proven on highways, bridges and tunnels.
Quick lead times and UK-wide delivery.
Decades of experience in infrastructure casting.

FastFlow is trusted on everything from motorway bridges to urban flyovers. And it’s backed by a team who knows drainage isn’t just a detail – it’s safety-critical.

FAQs

What is EN1433 and why is it important?

EN1433 ensures drainage systems are strong, safe, and suitable for roads, bridges and highways. It’s required on most UK infrastructure projects.

What load class is FastFlow rated for?

FastFlow meets Class D400 as standard and can be manufactured up to F900 for high-load areas.

Do you supply Kitemarked drainage castings?

Yes – FastFlow is BSI Kitemarked and tested to EN1433 standards.

Can FastFlow be used on bridge decks?

Absolutely. It’s designed as a Type-I system ideal for bridge deck gradients, waterproofing layers, and structural integration.

How do I request a FastFlow drainage quote?

Use our contact form to send project specs or deck layout drawings – we’ll respond with recommendations and pricing.