Product Overview

As a leading manufacturer and supplier of heavy-duty infrastructure solutions, we present the SJ-200 Heavy-Duty Bailey Bridge. Engineered for demanding construction sites and urgent emergency relief operations, this modular steel crossing delivers exceptional structural integrity and rapid deployment capabilities.

• Maximum single span reaching up to 60 meters.

• Fully modular, pin-connected components requiring zero on-site welding.

• Constructed from premium Q355B high-strength steel.

• Highly reusable system designed for permanent, temporary, or tactical applications.

When infrastructure fails or remote construction sites demand immediate heavy-duty access, the SJ-200 Heavy-Duty Bailey Bridge stands as the ultimate engineering solution. Running your hands along the cold, meticulously treated Q355B steel chords reveals a flawless finish designed to repel the harshest environmental elements, from torrential monsoon rains to abrasive desert winds. Every component is precision-engineered to interlock with satisfying acoustic clicks, ensuring that your field teams can erect massive spans without the blinding sparks, toxic fumes, or weather delays associated with on-site welding. The robust truss architecture translates directly into unyielding stability under the crushing weight of loaded dump trucks, armored convoys, or heavy excavation machinery. By eliminating the structural deformation commonly seen in inferior temporary crossings, this bridge guarantees a smooth, secure passage that keeps your critical operations moving forward without costly delays. It is not merely a temporary structure; it is a highly resilient, reusable asset that fundamentally transforms how you handle logistical bottlenecks, turning impassable terrain into a reliable conduit for heavy transport.

Technical Parameters

Key Features & Highlights

The engineering excellence behind the SJ-200 Heavy-Duty Bailey Bridge focuses entirely on solving complex logistical and environmental challenges. By integrating advanced metallurgy with intuitive mechanical design, this system accelerates project timelines while safeguarding your workforce and equipment.

• Massive Uninterrupted Spans: Capable of bridging gaps up to 60 meters without intermediate supports, drastically reducing foundation preparation time and minimizing ecological disruption in sensitive riverbeds.

• Zero-Welding Assembly: The intelligent pin-connected architecture means your crews only need standard tools to secure the structure, eliminating the need for specialized welding technicians and heavy generators in remote locations.

• Uncompromising Load Bearing: The reinforced truss framework effortlessly absorbs and distributes dynamic loads, preventing hazardous swaying or buckling when heavy construction vehicles brake or accelerate across the deck.

• Exceptional Rigidity: Engineered for minimal deflection under stress, providing a solid, pavement-like feel that instills confidence in drivers operating multi-ton machinery.

• Universal Adaptability: Whether serving as a permanent rural crossing, a temporary detour for urban subway construction, or a tactical military bridge, the modular nature allows for infinite configuration adjustments.

Modular Design & Rapid Assembly

Time is the most critical currency during emergency disaster relief and aggressive construction schedules. The SJ-200 system fundamentally redefines deployment speed through its ultra-standardized, lightweight modular design. By utilizing pure pin connections, the entire erection process bypasses the slow, weather-dependent necessity of field welding.

• Intuitive Component Interlocking: Standardized Bailey panels and transoms align seamlessly, allowing even newly formed crews to achieve rapid assembly after minimal orientation.

• Weather-Independent Construction: Because there is no welding involved, assembly can proceed safely during heavy rain, snow, or high winds, ensuring your project timeline remains unaffected by unpredictable climates.

• Reduced Equipment Dependency: The lightweight nature of individual modules means the bridge can often be launched using standard lorry-mounted cranes, avoiding the logistical nightmare of transporting massive lifting equipment to remote sites.

• Accelerated Traffic Restoration: In post-disaster scenarios like floods or landslides, this rapid deployment capability ensures that vital supply lines and evacuation routes are re-established in a matter of days or even hours.

Extreme Span & Heavy Load Capacity

Heavy infrastructure projects and tactical operations require crossings that refuse to yield under immense pressure. The SJ-200 answers this demand with a formidable structural design that balances extreme span capabilities with uncompromising heavy load capacity.

• Up to 60m Free-Span Capability: Navigate wide rivers, deep ravines, or active highways without the need for complex, time-consuming mid-span piers.

• High-Shear Resistance: Utilizing specially engineered High Shearing Bailey Panels (weighing 382kg each), the bridge absorbs extreme shear forces generated by heavily loaded mining trucks and armored vehicles.

• Dynamic Load Distribution: The meticulously calculated placement of transoms and sway braces ensures that the kinetic energy of moving convoys is evenly dispersed, preventing localized structural fatigue.

• Vibration Dampening: The tight tolerances of the 30CrMnTi alloy pins combined with robust horizontal and vertical bracing create a highly rigid platform that minimizes bounce and vibration, securing safe transit for sensitive cargo.

Material Craftsmanship & Durability

A temporary bridge must possess permanent-grade durability. We source only top-tier metallurgical materials to construct the SJ-200, ensuring it withstands highly corrosive environments and relentless mechanical wear. The tactile solidity of the Q355B high-strength steel speaks volumes about its manufacturing pedigree.

• Premium Q355B Steel Core: The primary trusses, chords, and transoms are forged from Q355B high-strength structural steel, offering an exceptional strength-to-weight ratio and superior resistance to metal fatigue.

• Indestructible Alloy Pins: The critical connecting nodes rely on 30CrMnTi alloy structural steel pins. These components undergo rigorous heat treatment to achieve incredible shear strength and wear resistance.

• Grade 8.8 Fasteners: Every bolt, from the chord bolts to the edge plate bolts, is rated at Grade 8.8, guaranteeing that high-tension connections remain torqued and secure despite constant heavy vibrations.

• Advanced Anti-Corrosion Treatment: The comprehensive surface treatment acts as an impenetrable shield against moisture, salt, and industrial chemicals, drastically extending the service life of the bridge in coastal or mining applications.

First of all, an experienced construction team should be assigned to undertake the erection of the bridge.

We have studied the drawings of the erection site and surrounding area, and conclude that the installation site is spacious and flat,so we recommend the installation procedure as follows:

1. Assemble the bilateral bailey panels to two whole construction, including the lower chord reinforced、horizontal bracing、vertical bracing、male and female end post. every assembling unit is mainly composed by 27 pieces of bailey panel

   Meanwhile, the bridge bearings are installed on the abutment. note that：check the length of the single whole bailey truss and the distance between the bolts of the two side of the river, if not fit , adjust the bolts.

2. Use suitable lorry-mounted crane to lift the two assembling truss unit and place them on the two side abutments.the single combined truss unit is weight about 11tons and 27.4 m length.

3. Install the transom, please refer the video.for the weight of one piece of transom is about not more than 1 ton，so it need a small crane. In order to increase the stability of the structure during the erection, the nearest transom and the farthest transom, as far as possible according to the capacity of the crane, should be installed first,  then for other transoms between them.

4. Install the sway bracing，then pave the first row in width direction of bridge decking on the transoms, including the side and middle bridge decking.

   Meanwhile, install the upper chord reinforced to strengthen the structure,then the crane could move onto the bridge decking to install the following ahead transoms,similar ways like upper procedure to be perform.

5. The rest can be done in the same manner.

6. Final, install the upper chord reinforced、curb、gap plate、handrail、 connective plate and handrail column.

Versatile Applications & Flexibility

The true value of the SJ-200 lies in its chameleon-like ability to adapt to wildly different operational requirements. Rather than purchasing single-use infrastructure, you are investing in a highly flexible bridging system that can be reconfigured for diverse lane widths, load ratings, and environmental contexts.

• Mining & Industrial Access: Provides a rugged, dependable artery for transporting raw ores, heavy excavators, and drilling equipment across unstable terrain in remote resource extraction zones.

• Urban Municipal Detours: Keeps city traffic flowing smoothly during major subway or highway overpass reconstructions. Its clean aesthetic and low-noise deck minimize public disruption.

• Tactical & Military Deployment: The subdued, modular components can be transported via standard logistics trucks and rapidly launched in austere environments to support armored columns.

• Emergency Disaster Relief: Serves as an immediate lifeline following earthquakes or washouts, allowing heavy rescue equipment and relief supplies to reach isolated communities safely.

• Customizable Deck Configurations: Easily adjustable to accommodate single-lane, double-lane, or dedicated pedestrian walkways, matching the specific traffic volume of your project.

Cost-Effectiveness & High Reusability

Smart procurement focuses on the total cost of ownership rather than just the initial acquisition price. The SJ-200 Heavy-Duty Bailey Bridge is engineered to be a continuously performing asset, delivering compounding economic benefits through its exceptional reusability and low maintenance demands.

• 100% Reusable Components: Once a temporary project concludes, the entire structure can be unpinned, disassembled, and transported to the next site with zero material waste.

• Reduced Labor Expenditures: The simplicity of the pin-and-bolt assembly slashes the man-hours required for erection, directly reducing expensive on-site labor and contractor fees.

• Minimal Maintenance Overhead: The combination of Q355B steel and robust surface protection means you spend less time and money on rust remediation or replacing fatigued parts.

• Optimized Transportation Logistics: The standardized dimensions of the Bailey panels allow them to be densely packed into standard shipping containers or flatbed trucks, significantly lowering freight costs across long distances.

Quality Control & Certifications

Safety is non-negotiable when lives and multi-million-dollar equipment rely on your infrastructure. Every single component of the SJ-200 undergoes a punishing regimen of quality assurance testing before it ever leaves the manufacturing facility, providing you with absolute peace of mind.

• ISO9001 Certified Manufacturing: Our production lines operate under strict international quality management systems, ensuring absolute consistency and precision across every batch of steel components.

• Comprehensive Material Traceability: We provide full material certificates for the Q355B steel and 30CrMnTi alloy pins, so you know the exact metallurgical composition of your bridge.

• Rigorous Load Testing: Structural elements are subjected to advanced non-destructive testing (NDT) and physical load simulations to verify they meet or exceed national safety standards.

• Transparent Documentation: Every delivery is accompanied by detailed factory test reports and official quality certificates, streamlining your compliance and site inspection processes.

End-to-End Engineering Support

Procuring a heavy-duty bridge is a complex technical endeavor, which is why we provide a comprehensive, turnkey support ecosystem. From the initial site survey to the final tightening of the last bolt, our engineering team stands beside you to guarantee a flawless execution.

• Free Structural Calculation: Our in-house engineers analyze your specific span, load requirements, and environmental factors to deliver precise structural calculations and customized blueprints at no extra cost.

• Detailed Erection Blueprints: You receive crystal-clear, step-by-step installation manuals and CAD drawings that eliminate guesswork for your field crews.

• Visual Training Resources: Comprehensive video tutorials demonstrate the exact sequence of launching the trusses, installing the transoms, and securing the sway braces.

• On-Site Supervision: For highly complex spans, our experienced technical supervisors can be deployed directly to your location to oversee the erection process and ensure absolute structural integrity.

• 24/7 After-Sales Response: Our dedicated technical support team remains on standby around the clock to instantly resolve any engineering queries or component requests during your project.

Why Choose Us

Selecting the right manufacturing partner is just as critical as choosing the right bridge. We have built our reputation on a foundation of unyielding reliability, deep engineering expertise, and a relentless commitment to customer success in the heavy infrastructure sector.

• Direct Manufacturer Advantage: By operating our own specialized production base in Zhenjiang, Jiangsu, we eliminate middleman markups, offering you factory-direct pricing without compromising on premium quality.

• Massive Production Capacity: Our streamlined assembly lines and extensive inventory of standard Bailey panels ensure rapid fulfillment, even for massive, multi-span emergency orders.

• Proven Global Track Record: Our modular steel bridges have been successfully deployed in some of the most unforgiving environments worldwide, earning the trust of top-tier construction firms and government agencies.

• Bespoke Customization: We do not just sell off-the-shelf products; we engineer tailored solutions. Whether you need unique deck widths or specialized anti-skid coatings, our design team adapts the product to your exact reality.

FAQ

What is the maximum span length achievable without intermediate supports?

The SJ-200 Heavy-Duty Bailey Bridge is engineered to achieve a maximum single free span of up to 60 meters. This impressive reach is made possible by the high-strength Q355B steel truss design and reinforced chords, allowing you to cross wide rivers or deep valleys without the time-consuming construction of mid-span piers.

Can the bridge accommodate heavy construction machinery and armored vehicles?

Absolutely. The system utilizes High Shearing Bailey Panels and heavy-duty transoms specifically designed to absorb dynamic, concentrated loads. It is routinely deployed in mining operations and military logistics to support fully loaded dump trucks, excavators, and armored convoys safely.

How is the bridge protected against rust and corrosion in harsh environments?

All primary steel components, including the Q355B panels and steel decks, undergo rigorous anti-corrosion treatments. Depending on your specific environmental requirements, we offer heavy-duty hot-dip galvanization or industrial-grade anti-corrosive painting to ensure long-term durability against moisture, salt, and chemical exposure.

What kind of equipment is required for the on-site assembly?

One of the greatest advantages of the SJ-200 is its zero-welding, pin-connected design. Assembly primarily requires standard hand tools for the Grade 8.8 bolts and a suitable lorry-mounted crane (typically 11-ton capacity or similar) to lift the combined truss units and transoms into place. We provide detailed lifting weights for all components to help you size your crane accurately.

Do you provide technical assistance for first-time installations?

Yes, we offer comprehensive end-to-end support. Your team will receive detailed CAD drawings, step-by-step installation manuals, and instructional videos. For complex projects, we can dispatch experienced engineering supervisors to your site to guide the construction team and ensure the erection procedure strictly follows safety protocols.