Need a tough, reliable bridge to connect coastal cities or islands? Our steel structure sea-crossing bridge is the go-to solution. Perfect for transportation departments and coastal development projects, it pairs corrosion-resistant steel frames with marine-focused design-offering long spans for ship navigation, strong wave resistance, and fast construction to minimize impact on maritime traffic. Ideal for projects where durability, navigation compatibility, and cross-sea connectivity matter most.
Key Features & Material:
Made of Q690NH weathering steel + Q960 high-strength steel, it uses 80% prefab bolted segments (reduces on-sea work). Surfaces get multi-layer anti-corrosion coating (resists salt spray) + anti-fatigue treatment. BIM design includes navigation clearance reserves, ship collision prevention devices, and drainage systems-fits medium to large cargo ships.

|
Parameter |
Specification |
|
Steel Grade |
Q690NH/Q960 |
|
Main Span |
100 - 500m |
|
Navigation Height |
15 - 30m |
|
Wave Resistance |
≤12m High Waves |
|
Seismic Resistance |
Grade 8.5+ |
Advantages:
Weathering steel stands up to salt spray for 100+ years, cutting maintenance costs. Long spans avoid blocking shipping lanes-ideal for busy sea routes. Prefab segments reduce on-sea construction by 50%, lowering safety risks. Flexible steel structure absorbs wave and earthquake energy, ensuring stability. Lightweight design reduces pier load, saving foundation investment.
Services:
We offer marine environment simulation, collision prevention system integration, and prefab segment assembly guidance. Our team provides annual salt spray corrosion detection and quick technical support within 4 hours. After-sales includes 50-year core structure warranty and regular anti-fatigue maintenance.

FAQ:
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