Language

+86-511-84522866
Jiangsu Zhonghai Bridge Equipment Co., Ltd.

CB 100(321) Bailey Bridge Custom

Home / Products / Bailey Bridge/Modular Bridge / CB 100(321) Bailey Bridge

CB 100(321) Bailey Bridge Supplier

The CB 100(321) Bailey Bridge has become the preferred solution in fields such as temporary construction, emergency traffic restoration, and rural road network improvement, thanks to its excellent cost-performance ratio and efficient adaptability. This bridge product inherits the classic modular design concept, with a structure that has been carefully optimized, featuring lightweight components and good interchangeability, allowing for quick assembly to meet various construction needs. It can be easily assembled by hand, significantly reducing the reliance on heavy machinery, thus lowering construction costs and project timelines. With outstanding stability and durability in light to medium load scenarios, its optimized structure effectively meets the common environmental and load requirements. Particularly in temporary construction and emergency traffic restoration situations, it can be quickly erected and put into use, providing significant support for traffic recovery and infrastructure development. Additionally, the bridge features a repeatable disassembly and reuse characteristic, making it adaptable to different locations and periodic needs, offering excellent economic benefits.

Product Categories

How can we help

If you need any helps, please feel free to contact us.

A TRUSTED MANUFACTURER OF MODULAR STEEL BRIDGES

ABOUT US

Company Profile title

Strong production capability, strict quality control, and proven engineering experience.
Jiangsu Zhonghai Bridge Equipment Co., Ltd. play
Jiangsu Zhonghai Bridge Equipment Co., Ltd.

Jiangsu Zhonghai Bridge Equipment Co., Ltd. ZHONGHAI BRIDGES

Jiangsu Zhonghai Bridge Equipment Co., Ltd. is a professional manufacturer specializing in Bailey bridges, modular steel bridges, and bridge construction equipment. Located in Jiangsu Province, our facility benefits from convenient regional logistics, ensuring fast and reliable global delivery.

As China OEM CB 100(321) Bailey Bridge Supplier and CB 100(321) Bailey Bridge Factory, Zhonghai Bridge Equipment Co., Ltd. with an annual production capacity exceeding 60,000 tons, advanced automatic welding robots, and a full set of NDT welding inspections, we operate under a rigid quality management system certified by ISO9001. All exported steel materials comply with SGS, ASTM, and EN standards, ensuring consistency and durability in demanding engineering environments.
Certificate Of Honour
  • Certificate of Quality Management System Certification
  • Certificate of Occupational Health and Safety Management System Certification
  • Certificate of Environment Management System Certification
  • Of Confomity of the Factory Production Control Certificate
  • Patent Certificate
  • Patent Certificate
  • Utility Model Patent Certificate
  • Utility Model Patent Certificate
  • Utility Model Patent Certificate
  • Utility Model Patent Certificate
  • Utility Model Patent Certificate
  • Utility Model Patent Certificate
Latest News
  • Steel Warehouse Structure Guide: Design, Cost & Build Timeline

    What Is a Steel Warehouse Structure and Why It Dominates Modern Storage Construction A steel warehouse structure is a building system built around a primary frame of hot-rolled or cold-formed steel members, typically arranged as rigid frames, trusses, or portal frames, and finished with metal or composite cladding panels. The ...

    READ MORE +
  • Metal Beams for Building & Modular Steel Bridge Construction Guide

    Metal Beams for Building Construction: Direct Answer and Core Specifications Metal beams, primarily hot-rolled I-beams, H-beams (wide-flange sections), and welded box beams, remain the standard load-bearing element for multi-story buildings, industrial sheds, and modular steel bridge spans because they deliver a strength-to-w...

    READ MORE +
  • Skyscraper Steel Structure: Grades, Systems & Costs Explained

    A modern skyscraper stands on a steel structure for one simple reason: steel delivers the highest strength-to-weight ratio of any mainstream building material, which lets engineers push floors higher while keeping the frame lighter than an equivalent reinforced concrete system. In a typical 200 to 300 meter landmark tower, a s...

    READ MORE +
Related products
Message Feedback
Industry knowledge

Modular steel bridges built around the CB 100(321) Bailey Bridge panel family occupy a specific niche in crossing infrastructure: situations where a poured structure isn't practical on the timeline a project has. Descended from the British Compact-100 / Type 321 truss design, this class of bridge is built from interchangeable steel panels that bolt and pin together on site, without deep foundation work, and can be arranged into single, double, or triple-truss configurations depending on the span and load a route actually carries. What separates a well-run deployment from a problem one usually isn't the erection itself — it's what happens to the panels, pins, and deck plates once real traffic, water, and years of cyclic loading start working on the steel.

How Panel Configuration Shapes Span and Load Capacity

A 321-type panel measures roughly 3m by 1.4m (or 3.048m by 1.45m on the British hole-spacing variant), and each one weighs somewhere between 270kg and 349kg depending on the build — light enough that a small crew can place them without a heavy crane. The span a bridge can carry isn't fixed by the panel itself; it's set by how many panels are stacked and doubled. A single-single truss handles short, light-traffic crossings, while triple-triple arrangements push toward the upper end of what a 321-type structure can span. More trusses and more layers mean more pin and bolt connections, and every one of those connections is a point that will eventually need inspection.

51m 38m 25m 0 SS DS TS DD TD TT Truss configuration (SS = single-single ... TT = triple-triple), illustrative span ranges

For a manufacturer such as Jiangsu Zhonghai Bridge Equipment Co., Ltd, configuration choice is also the first maintenance decision a client makes without necessarily realizing it — a heavier triple-truss layout carries more connection hardware, and that hardware becomes the maintenance workload for the life of the crossing.

Environmental Exposure and Why It Shortens Service Intervals

Modular steel bridges and Bailey bridge systems often operate in flood zones, mountain regions, coastal climates, or high-traffic construction routes, and each of those settings wears a different part of the structure first. Coastal and high-humidity sites push corrosion at pin and bolt connections well ahead of general steel fatigue. Mountain routes bring freeze-thaw cycling and debris impact against the lower chord. Flood-prone crossings see periodic submersion and floating debris loading that a dry-site bridge never experiences. High-traffic construction routes wear panel joints through sheer repetition, long before any single load event would be a concern on its own.

Coastal / high-humidity High Flood-prone crossings Moderate–High Mountain / high-traffic routes Moderate Standard inland routes Lower Illustrative relative stress on connections by deployment environment

This is precisely the operating reality that shapes Jiangsu Zhonghai Bridge Equipment Co., Ltd's After-sales & Maintenance Support program: the goal isn't a generic service plan, it's matching inspection and part-replacement priorities to whatever environment the bridge is actually sitting in.

Maintenance Scope Across the Bridge's Service Life

Jiangsu Zhonghai Bridge Equipment Co., Ltd's after-sales program is built to help clients maintain structural integrity, replace worn components, upgrade load capacity, and address unexpected operating conditions throughout the bridge's service life, with responsive technical assistance and a continuous supply of compatible parts behind it. In practice, that support covers the full lifecycle of a CB 100(321) Bailey Bridge rather than a single stage of it.

  • Replacement of Bailey panels, pins, transoms, and deck plates as they reach the end of usable condition
  • Structural condition evaluation during long-term use, rather than only at initial installation
  • Corrosion inspection specifically for coastal or high-humidity regions where pin and bolt wear accelerates
  • Load enhancement recommendations when traffic demand on a route increases beyond the original design case
Panel / Pin Replacement Structural Evaluation Corrosion Inspection Load Enhancement Parts Supply
Common wear components and the maintenance action typically applied
Component Typical wear driver Maintenance action
Bailey panel Fatigue, corrosion at joints Panel-level replacement
Connecting pins Hole elongation, friction wear Pin replacement
Transoms Repeated live-load flexing Transom replacement
Deck plates Surface abrasion, moisture Deck plate replacement

Responsive Support and Parts Continuity Under Real Load

A maintenance scope is only useful if it can actually be executed on schedule. That's the practical reason responsive technical assistance and a continuous supply of compatible parts matter as much as the inspection work itself — a corrosion finding or a worn pin is only a problem solved once a matching part is on site and installed, not when it's identified on paper. A typical support cycle moves from initial assessment, to sourcing the correct panel, pin, transom, or deck plate, to on-site replacement, to a final verification check before the crossing goes back into full service.

high start Assessment Parts Sourcing Replacement Verification Progression toward restored structural condition across a typical support cycle

This is the operating model behind Jiangsu Zhonghai Bridge Equipment Co., Ltd's after-sales support: keeping the CB 100(321) Bailey Bridge dependable under real-world stress isn't a one-time inspection, it's continuous access to compatible parts and technical response for as long as the bridge is in service.

Frequently Asked Questions

What does the "CB 100(321)" designation actually refer to?

It identifies the panel truss family — the Compact-100 design, also known regionally as the Type 321 panel — which uses interchangeable steel panels around 3m by 1.4m that can be combined into single, double, or triple-truss configurations depending on span and load requirements.

How often should a Bailey bridge be inspected once it's in coastal or high-humidity service?

Corrosion at pin and bolt connections tends to progress faster in these settings than in a standard inland deployment, so inspection intervals are usually shortened accordingly rather than left on a generic schedule.

Can load capacity be increased after a bridge is already installed?

Yes — this is typically handled through a load enhancement recommendation, which may involve reconfiguring the truss arrangement or reinforcing specific connections rather than replacing the whole structure.

What determines whether a worn part is repaired or fully replaced?

The decision usually comes down to the specific component: pin hole elongation, corrosion depth on a panel, or visible deformation on a transom or deck plate each point toward replacement once they pass a usable threshold, rather than a temporary repair.

Does after-sales support still cover parts for older installations?

Yes — continuous supply of compatible parts is a core part of the program, specifically so that bridges already in service can be maintained rather than needing a full structural replacement.

X Facebook
Products News