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Custom Engineered Steel Structure Bridges – Truss, Arch, and Box Girder Designs
APPLICATION
Bridges and Infrastructure Projects: Steel construction is prevalent in the building of steel structure bridges, highways, and energy infrastructure because it can meet complex engineering requirements with strength, accuracy and flexibility.
Industrial factories and plat production:Heavy-duty steel beams such as H-beam, I-beam, steel plate support high load-bearing industrial works. They are ideal for equipment platforms, production lines and factory floors.
Warehouses and Logistics Centers: Prefabricated steel sructure buildings enable rapid, cost effective construction of warehouses and distribution centers. Modular components, allow for fast building and provide strength and longevity.
Commercial and public buildings: Prefabricated steel frames offer a modern and flexible solution for commercial construction,for example, in office blocks, shopping centres and sports halls.
PRODUCT DETAIL
Core steel structure products for bridge construction
1. Main steel structure bridge type
| Product Type | Specification Range | Core Function | Central America Adaptation |
|---|---|---|---|
| Truss Bridge | Span: 15–120 m | Provides long-span load-bearing capacity using interconnected steel members; supports vehicular, pedestrian, and light railway traffic | Seismic-grade joint design with bolted gusset plates; modular prefabrication for easier transport over inland routes; corrosion-resistant coatings for tropical climate |
| Arch Bridge | Span: 20–150 m | Transfers loads efficiently through arch geometry; ideal for heavy traffic and scenic urban environments | High-strength steel with hot-dip galvanizing (Zn ≥ 85 μm); adjustable bearings for seismic movement; lightweight modular segments for remote site installation |
| Box Girder Bridge | Span: 10–100 m | Provides torsional stiffness and high bending resistance for highway and elevated roadway applications | Seismic-optimized box girder cross-section; bolted and welded connections designed for earthquake resilience; modular prefabricated sections for cost-efficient inland transport |
| Pedestrian/Cycling Bridge | Span: 5–50 m | Lightweight steel structure for safe pedestrian and cycling passage | Lightweight steel with anti-slip deck panels; corrosion-resistant coatings; quick-assembly modular design suitable for tropical weather conditions |
2. Enclosure system products (weatherproof + anti-corrosion)
| Product Type | Specification Range | Core Function | Central America Adaptation |
|---|---|---|---|
| Roof Deck Panels | C12×25 to C18×35 sections, hot-dip galvanized (Zn ≥ 85 μm) | Supports steel bridge decking and protective roof panels; engineered for high wind speeds (typhoon level 12) | Anti-corrosion coating for tropical climates; lightweight modular panels for inland transport and rapid on-site assembly |
| Side Wall Panels | Z10×22 to Z16×28 profiles with salt spray resistance >1000 hours | Provides weatherproof enclosure for pedestrian walkways and maintenance paths | Integrated ventilation to reduce condensation; corrosion-resistant for hot and humid environments |
| Bracing & Support System | Galvanized round steel bars (Φ14–Φ18) and angle steel L60×6 | Enhances lateral stability; resists hurricane-level wind loads and seismic effects | Bolted/welded connections optimized for seismic zones; corrosion-resistant for tropical conditions |
3. Supporting auxiliary products (localized construction adaptation)
| Product Type | Specification Range | Core Function | Central America Adaptation |
|---|---|---|---|
| Expansion Joints | Modular steel or rubber joints, width 50–200 mm | Accommodates thermal expansion and contraction in bridge spans | Seismic-grade design with corrosion-resistant materials for humid and tropical climates |
| Guardrails & Safety Barriers | Steel channel or tubular sections, height 900–1200 mm | Provides safety for vehicles and pedestrians; enhances bridge protection | Anti-corrosion coatings and UV-resistant finishes; adapted for high rainfall and salt spray exposure |
| Bridge Access Ladders & Platforms | Galvanized ladders (Φ32–Φ50) and platforms (L50×5 angle steel) | Enables safe inspection and maintenance of bridge structure | Lightweight modular components for rapid on-site installation; corrosion-resistant for tropical weather |
| Drainage & Water Management Systems | Steel grates (Φ12 bars) and gutter channels (C-section 100×50–150×75) | Directs rainwater away from bridge deck; prevents water accumulation | Hot-dip galvanized or painted finish for high humidity and tropical storm resilience |
| Lighting & Utility Supports | Steel poles, brackets, and cable trays | Supports bridge lighting, signaling, and utility lines | Pre-coated for anti-corrosion; designed for easy mounting and modular replacement in remote locations |
STEEL STRUCTURE PROCESSING
Cutting
Plasma and flame cutting for thick steel plates
Precision shearing machines for thin plates
Ensures accurate size and clean cutting edge
Forming
Cold bending and press brake forming for purlins, gutters and trims
Rolling machines for circular members and round supports
Keeps structural propagation and dimension stability
Welding
Submerged arc welding is used for h-beams and heavy columns
Manual arc welding connection plates and structural joints
CO₂ gas shielded welding for thin sections
Welding Inspection to Full Confidence in the Structural Integrity
Hole Processing
CNC drilling for exact bolt hole alignment
Punch press machines for small-batch parts
High accuracy position allows easy installation on site
Surface Treatment
Shot blasting or sand blasting to remove rust
Grinding of welds and surface polishing/finishing
Hot-dip galvanizing of bolts and supporting parts for enhanced corrosion protection
Trial Assembly
Pre-assembly of columns, beams and bracing systems
Dimensional checking by using professional measuring instruments
InKine Disassembly once inspection for secure shipment
STEEL STRUCTURE TESTING
| Test Type | Standard(s) | Purpose / Notes |
|---|---|---|
| Structural Load Test | ASTM A370, EN 10002 | Verify steel beams, trusses, and girders can safely withstand vehicular, pedestrian, and dynamic bridge loads. |
| Weld Quality Inspection | AWS D1.1, ISO 5817 | Ensure welded connections meet international standards; critical for truss and box girder joints. |
| Corrosion Resistance (Salt Spray / Fog) | ASTM B117, ISO 9227 | Protect steel bridge components in coastal and humid tropical conditions; suitable for Central American climates. |
| Coating Adhesion Test | ASTM D3359, ISO 2409 | Verify paint and galvanizing adhesion; prevents peeling or delamination under thermal expansion/contraction. |
| UV & Weathering Resistance | ASTM G154, ISO 4892 | Prevent surface fading, chalking, and degradation from sunlight exposure on exposed steel surfaces. |
| Humidity & Heat Resistance | ASTM D2247 | Ensure bridge coatings resist blistering and cracking under high humidity and temperature cycles. |
| Impact & Handling Test | ASTM D2794, ISO 6272 | Guarantee coating integrity during transport, handling, and assembly on site. |
| Dimensional & Straightness Check | ISO 8501, EN 1090 | Ensure prefabricated beams, trusses, and girders meet design dimensions and tolerances for seamless installation. |
| Fatigue & Vibration Test | ASTM E466, ISO 12107 | Verify long-term performance under traffic vibration, wind loads, and dynamic stresses. |
| Anchor & Bolted Connection Test | ASTM F606, EN 14399 | Confirm bolted joints, seismic connectors, and deck anchors meet safety and load requirements. |
SURFACE TREATMENT
PACKAGING AND SHIPPING
Trusses & Girders: Banded in heavy-duty steel and braced with wood framing for non-standard shapes. Corner protectors, anti-moisture wrap and rust-protecting coatings ensure that they don’t bend, scratch or rust while en route.
Bridge Deck Panels & Roof / Wall Panels: Palletized with foam or wood spacers protecting the hot-dip galvanized surface. Wrapped with waterproof and UV protection film, applicable to tropical climate, suitable for shipping for a long time.
Columns & Beams: Bolted packed in crates or bundled with shock absorber, rust free wrapping and orientation labels, which allows safe handling, means end user that they have to lift the exact same way you packed it. br brJanuary 8, 2016Corner protectors, anti-moisture wrapping, and corrosion inhibitor coatings prevent bent, scratched, or rusty metal at the time of delivery and transportation.
Ancillary Parts (Bracing, Bolts, Anchors): In wooden case(s) or steel drum(s) with waterproof protection. Parts are distinctly numbered and grouped by assembly subsection for quick and easy site assembly.
Transport & Logistics: Using sea-freight, flatbed trucks or way inland container. The components are sized and bundled in a way that frees logistical constraints, including remote or inland sites, to deliver safe and ready-to-assemble solutions to your worksite.
WHY CHOOSE OUR STEEL STRUCTURES?
Custom-Engineered Solutions: We offer fully customized bridge designs including truss, arch, and box girder configurations for span, load, and site specific conditions.
Materials: All steel elements are produced in accordance with international standards (ASTM, EN, AASHTO) and can be hot dip galvanized, or made of weathering steel for added long-term durability and corrosion protection.
High Quality Factory-made: TLC prefabricated modular units are manufactured to precise tolerances, which help minimize assembly time and errors in installation.
Reliability & Weather-proof: The bridges are engineered to be durable in tropical environment, high wind, seismic condition, and heavy road load traffic for long service life.
One-Stop Service: Design consulting, manufacturing, packaging, shipping and onsite technical support, we are the most professional steel bridge company to assist you throughout.
International Expertise: Having completed projects in Central and South America and Southeast Asia, we are multinational in thought as we meet the unique challenges of local construction with solutions that fit local need.
Safe & Rapid Logistics: The parts are light enough to be shipped by air for best delivery speed, packing by anti-corrosion protection, modular organized, transport optimized for safe delivery even to remote or inland sites.
Ready to start your project?
FAQ
Q1: What types of bridges do you provide?
A: Truss, arch, box girder, and pedestrian/cycling bridges, fully custom-engineered.
Q2: What standards do your components meet?
A: ASTM, EN, ISO, and AASHTO; hot-dip galvanizing or weathering steel available.
Q3: Are bridges suitable for tropical and seismic regions?
A: Yes, designed for high wind, seismic activity, and tropical climates.
Q4: How are components packed and shipped?
A: Bundled, crated, and corrosion-protected; labeled for easy on-site assembly.
Q5: Typical lead time?
A: 8–20 weeks depending on design and complexity; modular prefabrication reduces installation time.
Address
Bl20, Shanghecheng, Shuangjie Street, Beichen District, Tianjin, China
Phone
+86 13652091506
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