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CB100
Single lane modular bridges are streamlined modular structures engineered for one-way vehicle, pedestrian, or mixed traffic, combining the adaptability of modular construction with the compactness needed for space-constrained or low-volume scenarios. Unlike double-lane modular bridges or permanent single-lane spans, these bridges prioritize minimal footprint, rapid assembly, and versatility—making them ideal for rural roads, trail networks, construction site access, disaster relief in narrow areas, and temporary connections over small waterways.
The core design of single lane modular bridges revolves around lightweight, standardized components. Typically crafted from high-strength aluminum or steel, the modules include narrow deck panels (2.5–3 meters wide, matching standard single-lane widths), simple truss or beam supports, and quick-connect fittings. These parts are prefabricated in factories, ensuring precision: deck panels lock together to form a smooth, even surface, while support modules create a stable framework capable of handling cars, small trucks, or agricultural vehicles (up to 15–20 tons). The compact design eliminates the need for wide foundations, making it easy to install in tight spaces like narrow riverbanks, forest trails, or between existing structures—areas where wider bridges would be impractical.
Speed of deployment is a key strength. A crew of 3–5 workers with basic equipment (such as small cranes or hand tools) can assemble a 30-meter single lane modular bridge in 1 day—far quicker than permanent bridges, which may take weeks. This agility is critical in emergencies: after flash floods wash out rural footbridges or small road crossings, single lane modular spans restore access to isolated villages within hours, letting residents reach markets, schools, or medical facilities. For construction sites, they provide temporary access for workers and light machinery without disrupting surrounding landscapes.
Versatility across use cases enhances their appeal. In rural areas, they replace aging single-lane wooden bridges, offering greater durability while fitting within limited infrastructure budgets. For outdoor recreation, they span streams or gulleys in hiking or biking trails, blending with natural surroundings thanks to their slim profile. Many models also include safety features like handrails (for pedestrian use), reflective strips (for low-light visibility), and non-slip decking—adapting to mixed traffic needs like pedestrians sharing the lane with small utility vehicles.
Sustainability and cost-effectiveness further set them apart. Components are reusable: after use, the bridge can be disassembled, stored, or transported to new sites, cutting material waste. Their low upfront cost and minimal maintenance needs (no frequent repainting or heavy repairs) make them a budget-friendly choice for communities or projects with limited resources.
Single lane modular bridges fill a vital niche in infrastructure: they deliver reliable connectivity in spaces where wider bridges aren’t needed or possible, proving that compact design and modular flexibility can meet essential traffic needs efficiently.
| CB321(100) Truss Press Limited Table | |||||||||
| No. | Lnternal Force | Structure Form | |||||||
| Not Reinforced Model | Reinforced Model | ||||||||
| SS | DS | TS | DDR | SSR | DSR | TSR | DDR | ||
| 321(100) | Standard Truss Moment(kN.m) | 788.2 | 1576.4 | 2246.4 | 3265.4 | 1687.5 | 3375 | 4809.4 | 6750 |
| 321(100) | Standard Truss Shear (kN) | 245.2 | 490.5 | 698.9 | 490.5 | 245.2 | 490.5 | 698.9 | 490.5 |
| 321 (100) Table of geometric characteristics of truss bridge(Half bridge) | |||||||||
| Type No. | Geometric Characteristics | Structure Form | |||||||
| Not Reinforced Model | Reinforced Model | ||||||||
| SS | DS | TS | DDR | SSR | DSR | TSR | DDR | ||
| 321(100) | Section properties(cm3) | 3578.5 | 7157.1 | 10735.6 | 14817.9 | 7699.1 | 15398.3 | 23097.4 | 30641.7 |
| 321(100) | Moment of inertia(cm4) | 250497.2 | 500994.4 | 751491.6 | 2148588.8 | 577434.4 | 1154868.8 | 1732303.2 | 4596255.2 |
Single lane modular bridges are streamlined modular structures engineered for one-way vehicle, pedestrian, or mixed traffic, combining the adaptability of modular construction with the compactness needed for space-constrained or low-volume scenarios. Unlike double-lane modular bridges or permanent single-lane spans, these bridges prioritize minimal footprint, rapid assembly, and versatility—making them ideal for rural roads, trail networks, construction site access, disaster relief in narrow areas, and temporary connections over small waterways.
The core design of single lane modular bridges revolves around lightweight, standardized components. Typically crafted from high-strength aluminum or steel, the modules include narrow deck panels (2.5–3 meters wide, matching standard single-lane widths), simple truss or beam supports, and quick-connect fittings. These parts are prefabricated in factories, ensuring precision: deck panels lock together to form a smooth, even surface, while support modules create a stable framework capable of handling cars, small trucks, or agricultural vehicles (up to 15–20 tons). The compact design eliminates the need for wide foundations, making it easy to install in tight spaces like narrow riverbanks, forest trails, or between existing structures—areas where wider bridges would be impractical.
Speed of deployment is a key strength. A crew of 3–5 workers with basic equipment (such as small cranes or hand tools) can assemble a 30-meter single lane modular bridge in 1 day—far quicker than permanent bridges, which may take weeks. This agility is critical in emergencies: after flash floods wash out rural footbridges or small road crossings, single lane modular spans restore access to isolated villages within hours, letting residents reach markets, schools, or medical facilities. For construction sites, they provide temporary access for workers and light machinery without disrupting surrounding landscapes.
Versatility across use cases enhances their appeal. In rural areas, they replace aging single-lane wooden bridges, offering greater durability while fitting within limited infrastructure budgets. For outdoor recreation, they span streams or gulleys in hiking or biking trails, blending with natural surroundings thanks to their slim profile. Many models also include safety features like handrails (for pedestrian use), reflective strips (for low-light visibility), and non-slip decking—adapting to mixed traffic needs like pedestrians sharing the lane with small utility vehicles.
Sustainability and cost-effectiveness further set them apart. Components are reusable: after use, the bridge can be disassembled, stored, or transported to new sites, cutting material waste. Their low upfront cost and minimal maintenance needs (no frequent repainting or heavy repairs) make them a budget-friendly choice for communities or projects with limited resources.
Single lane modular bridges fill a vital niche in infrastructure: they deliver reliable connectivity in spaces where wider bridges aren’t needed or possible, proving that compact design and modular flexibility can meet essential traffic needs efficiently.
| CB321(100) Truss Press Limited Table | |||||||||
| No. | Lnternal Force | Structure Form | |||||||
| Not Reinforced Model | Reinforced Model | ||||||||
| SS | DS | TS | DDR | SSR | DSR | TSR | DDR | ||
| 321(100) | Standard Truss Moment(kN.m) | 788.2 | 1576.4 | 2246.4 | 3265.4 | 1687.5 | 3375 | 4809.4 | 6750 |
| 321(100) | Standard Truss Shear (kN) | 245.2 | 490.5 | 698.9 | 490.5 | 245.2 | 490.5 | 698.9 | 490.5 |
| 321 (100) Table of geometric characteristics of truss bridge(Half bridge) | |||||||||
| Type No. | Geometric Characteristics | Structure Form | |||||||
| Not Reinforced Model | Reinforced Model | ||||||||
| SS | DS | TS | DDR | SSR | DSR | TSR | DDR | ||
| 321(100) | Section properties(cm3) | 3578.5 | 7157.1 | 10735.6 | 14817.9 | 7699.1 | 15398.3 | 23097.4 | 30641.7 |
| 321(100) | Moment of inertia(cm4) | 250497.2 | 500994.4 | 751491.6 | 2148588.8 | 577434.4 | 1154868.8 | 1732303.2 | 4596255.2 |
