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CB100
Single lane steel bridges are compact, single-directional structures built entirely or primarily with steel, designed to serve low-to-moderate traffic volumes—from rural farm roads and residential lanes to recreational trails. Unlike wider steel bridges or single-lane wooden/ concrete spans, these bridges leverage steel’s strength, durability, and adaptability to deliver reliable connectivity in space-constrained or budget-conscious scenarios, balancing performance with practicality.
The core of single lane steel bridges lies in their steel-centric design. Typically constructed with high-strength steel components—such as I-beams for main supports, steel decking (or steel-reinforced composite decking), and steel railings—they offer exceptional load-bearing capacity despite their narrow profile (2.5–3.5 meters wide, matching standard single-lane widths). Steel’s high strength-to-weight ratio lets engineers create slim, unobtrusive structures: for example, a single lane steel truss bridge spanning a small river can use lightweight yet sturdy steel trusses to minimize visual impact while supporting cars, small trucks, or agricultural vehicles (up to 20–25 tons). Many also include corrosion-resistant treatments like galvanization or epoxy coatings, extending their lifespan in wet or harsh environments—critical for rural crossings over streams or in coastal areas.
Versatility across environments is a key advantage. In rural regions, they replace aging single-lane wooden bridges, offering greater resistance to rot, pests, and weather damage while fitting within limited infrastructure budgets. For recreational trails—such as hiking, biking, or equestrian paths—they span gulleys or small waterways, with open steel truss designs that preserve views of the natural landscape. In remote industrial sites (like mining or logging operations), they provide durable access for light machinery, with steel’s toughness standing up to frequent use and heavy loads.
Practicality and low maintenance further enhance their appeal. Steel’s rigidity ensures a smooth, stable driving surface that requires minimal repairs over time—unlike wooden bridges that need regular replacement of planks or concrete spans prone to cracking. Installation, while more involved than modular bridges, is still efficient: prefabricated steel components (like truss sections or deck panels) can be transported to remote sites and assembled with moderate machinery, reducing on-site construction time. For communities with long-term traffic needs, single lane steel bridges offer a cost-effective middle ground—more durable than temporary modular spans but less expensive than permanent double-lane bridges.
Single lane steel bridges fill a vital niche in infrastructure: they deliver the strength and longevity of steel in a compact, affordable design, ensuring reliable connectivity for areas where wider, more complex bridges are unnecessary. Whether serving rural homes, outdoor enthusiasts, or industrial operations, they prove that focused, material-specific design can meet essential traffic needs effectively.
| 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 steel bridges are compact, single-directional structures built entirely or primarily with steel, designed to serve low-to-moderate traffic volumes—from rural farm roads and residential lanes to recreational trails. Unlike wider steel bridges or single-lane wooden/ concrete spans, these bridges leverage steel’s strength, durability, and adaptability to deliver reliable connectivity in space-constrained or budget-conscious scenarios, balancing performance with practicality.
The core of single lane steel bridges lies in their steel-centric design. Typically constructed with high-strength steel components—such as I-beams for main supports, steel decking (or steel-reinforced composite decking), and steel railings—they offer exceptional load-bearing capacity despite their narrow profile (2.5–3.5 meters wide, matching standard single-lane widths). Steel’s high strength-to-weight ratio lets engineers create slim, unobtrusive structures: for example, a single lane steel truss bridge spanning a small river can use lightweight yet sturdy steel trusses to minimize visual impact while supporting cars, small trucks, or agricultural vehicles (up to 20–25 tons). Many also include corrosion-resistant treatments like galvanization or epoxy coatings, extending their lifespan in wet or harsh environments—critical for rural crossings over streams or in coastal areas.
Versatility across environments is a key advantage. In rural regions, they replace aging single-lane wooden bridges, offering greater resistance to rot, pests, and weather damage while fitting within limited infrastructure budgets. For recreational trails—such as hiking, biking, or equestrian paths—they span gulleys or small waterways, with open steel truss designs that preserve views of the natural landscape. In remote industrial sites (like mining or logging operations), they provide durable access for light machinery, with steel’s toughness standing up to frequent use and heavy loads.
Practicality and low maintenance further enhance their appeal. Steel’s rigidity ensures a smooth, stable driving surface that requires minimal repairs over time—unlike wooden bridges that need regular replacement of planks or concrete spans prone to cracking. Installation, while more involved than modular bridges, is still efficient: prefabricated steel components (like truss sections or deck panels) can be transported to remote sites and assembled with moderate machinery, reducing on-site construction time. For communities with long-term traffic needs, single lane steel bridges offer a cost-effective middle ground—more durable than temporary modular spans but less expensive than permanent double-lane bridges.
Single lane steel bridges fill a vital niche in infrastructure: they deliver the strength and longevity of steel in a compact, affordable design, ensuring reliable connectivity for areas where wider, more complex bridges are unnecessary. Whether serving rural homes, outdoor enthusiasts, or industrial operations, they prove that focused, material-specific design can meet essential traffic needs effectively.
| 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 |