Bridge Girder Transport Drop Deck Semi-Trailer
The Bridge Girder Transport Drop Deck Semi-Trailer is an extra-heavy-duty drop-deck lowbed semi-trailer engineered specifically for hauling long-span steel bridge girders, concrete box girders, segmental bridge piers, and heavy bridge launch equipment. Built with a load capacity ranging from 30 to 150+ tons, it is fabricated from Q345B/Q550/Q700/T700 high-tensile steel using automated submerged-arc welding. Its lowered drop-deck loading well (700–1,100 mm deck height) combined with heavy-duty bolster turntables, multi-axle steering options, and reinforced crossmembers provides maximum resistance against frame bending, lowers the transport center of gravity for tall bridge segments, and guarantees strict highway bridge clearance compliance during infrastructure transport operations. Fully certified under ECE, ISO9001, CCC, CE, DOT, and SGS standards.
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Product Details
Technical Specifications Matrix
| Specification Category | Parameter Details |
| Product Name | Bridge Girder Transport Drop Deck Semi-Trailer / Heavy Bridge Segment Semi-Trailer |
| Condition | 100% Brand New |
| Rated Load Capacity | 30 – 150+ Tons |
| Overall Dimensions (L×W×H) | 12,500–18,000 × 2,500–3,000 × 1,500–3,500 mm |
| Low Deck Length | 7,500 – 9,700 mm |
| Loading Deck Height | 700 – 1,100 mm |
| HS Code | 8716391000 |
| International Certifications | ECE, ISO9001, CCC, CE, DOT, SGS |
Key Structural & Performance Features
1. Drop-Deck Structure Built for Extreme Bridge Loads
- High-Tensile Steel Structure: Constructed using Q345B, Q550, Q700, or T700 steel to absorb extreme point-load concentration and high bending moments from long concrete and steel bridge girders.
- Sunken Drop-Deck Configuration: Lowers the overall height profile of massive precast bridge segments to negotiate highway overpasses and underpasses safely.
- Automated SAW Welding: Submerged-Arc Welding (SAW) combined with $CO_2$ gas-shielded welding guarantees zero-deformation performance under heavy dynamic load stress.
- Heavy Main Beam Profile: Main beam height options of 450 mm, 500 mm, or 520 mm with extra-thick top and bottom flange plates and high-density crossmember support.
- Anti-Skid Checkered Platform: 4 mm, 5 mm, or 6 mm checkered steel floor reinforced with dense I-beams to support heavy steel bolster contact pads.
2. Axle, Suspension & Hydraulic Steering Systems
- Axle Configurations: 2 to 6 axles (Supports FUWA, BPW, Huajin, or hydraulic steerable axles; 13T / 16T / 20T / 25T capacity per axle).
- Steering Axle Options: Optional hydraulic automatic or remote-controlled steering axles with large articulation angles to navigate tight curves near bridge construction sites.
- Tire & Rim Setup: 8 to 24 heavy-duty tires paired with 6.75-17.5 or 9.00-22.5 high-load steel rims.
- Suspension Options: Multi-leaf heavy-duty spring suspension (10/12 leaves) or hydraulic/air suspension system.
- Braking System: Dual-line ABS anti-lock braking system (WABCO, Kemi, Haldex, or equivalent).
3. Bridge Girder Securing & Logistics Accessories
- Bolster Turntables & Rotating Saddles: Fitted with heavy-duty rotating bolsters or turntable mounts to support ultra-long bridge girders and allow independent trailer articulation around tight corners.
- Gooseneck Configurations: Fixed, detachable (front-loading), hydraulic, or foldable gooseneck designs for flexible crane and gantry loading scenarios.
- Width Extension: Outriggers/side brackets extend platform width by 250–300 mm per side to fit wide box girders and bridge decks.
- Cargo Securing Systems: GR120 heavy-duty lashing chains, D-ring anchor points, and ratchet binders to lock rigid bridge girders firmly in place.
- Standard Accessories: 28-Ton two-speed landing gear (JOST / FUWA), 50# (2") or 90# (3.5") interchangeable kingpins, 24V 7-pin LED lighting system, 1–2 spare tire carriers, and a waterproof tool box.
Commercial & Logistics Terms
- Warranty Policy: 3-Year warranty for the main beam; 1-Year warranty for axles.
- Delivery Lead Time: 25 – 35 working days upon order confirmation.
- Packaging & Shipping: Nude packing; shipped via Ro-Ro vessel, Bulk Cargo ship, or Container.
- Payment Terms: T/T (Telegraphic Transfer), L/C (Letter of Credit).
