Pedestrian overpasses
Road-crossing footbridges with stairs, ramps or lift towers and roof cover.
Project types · Steel & pedestrian bridges
Bridges made in the factory, lifted in a night
Pedestrian overpasses, footbridges between buildings, conveyor and pipe bridges and short-span steel bridges. Designed and fabricated in our own factory, trial-assembled, and shipped in the largest sections the route allows, so road closures stay short.
2018delivering steel structures to Thailand
196 TCFG Long An steel bridge, Vietnam (2023)
EXC3EN 1090 execution class for welded steel
2,500 Tfabrication capacity every month
Less time over live traffic
The best bridge work happens in the factory
A footbridge over a busy Thai road, a link between two factory buildings or a pipe bridge across a plant road all share one problem: every hour of work on site disrupts traffic or operations. The answer is to do almost everything in the factory.
We design the bridge, fabricate full-length or large segments with welded splices in our certified factory, trial-assemble where needed, coat it for the site and ship it ready to lift. On site, your contractor sets the sections on prepared supports, often in a single night closure. We have delivered steel bridges and footbridges for Singapore and Vietnam; non-Thai projects are shown as references.
- Pedestrian overpasses and footbridges
- Links between buildings and over plant roads
- Conveyor and pipe bridges
- Large pre-assembled sections, short closures
Structural solutions
Bridges we design and fabricate
Each option is engineered member by member in our design office, then built on our own fabrication lines.
Building link bridges
Enclosed or open links between factory, office and hospital buildings.
Short-span steel bridges
Truss, plate-girder and box-girder bridges for estates, campuses and private roads.
Conveyor bridges
Galleries carrying conveyors between silos, mills and loading points.
Pipe and cable bridges
Pipe racks and cable bridges across plant roads.
Stairs, ramps and towers
Access stairs, accessible ramps and lift shafts for bridges.
Your challenges, our answers
What owners ask us, and how we solve it
The questions we hear most often from Thai owners, designers and contractors.
Challenge 01
Road closures must be short
Our answer
Bridges arrive in large pre-assembled sections and are lifted in planned night closures.
Challenge 02
Transport limits
Our answer
Section lengths and splice positions planned around the route from port to site.
Challenge 03
Weld quality on primary members
Our answer
Welding to ISO 3834-2 and EN 1090 EXC3 with full inspection records.
Challenge 04
Corrosion over traffic
Our answer
ISO 12944 systems for long life with little maintenance over live roads.
Challenge 05
Footfall vibration
Our answer
Deck stiffness and natural frequency checked so the bridge feels solid.
Challenge 06
Approvals
Our answer
Drawings and calculations prepared for your Thai engineer and the road authority.
Inside the structure
Typical design ranges for steel bridges
Every project is engineered to its own brief and site. These are the ranges we work in most often.
| Design item | Typical range we engineer |
|---|---|
| Span | About 10–50 m single span, longer with intermediate supports |
| Type | Truss, plate girder, box girder or Vierendeel |
| Deck | Steel plate, grating, composite slab or precast |
| Width | Pedestrian 2–5 m, vehicle bridges to project needs |
| Cover | Open, roofed or fully enclosed |
| Corrosion | ISO 12944 system for the site, galvanising for secondary steel |
| Delivery | Full-length or large segments sized for the route |
Design highlights
- 01
Trial assembly
Critical splices fitted in the factory before shipping.
- 02
Lifting plan support
Weights, lifting points and centre of gravity provided.
- 03
Full QC records
Weld, NDT and coating records for each segment.
- 04
One supplier
Bridge, stairs, ramps and roof from one factory.
Designed and made by World Steel
From our design office to your Thai port, in one company
Your structure is not bought from a trader or subcontracted: it is engineered by our team and fabricated, inspected, painted and packed in the World Steel factory.
World Steel factory · Tay Ninh, Vietnam20,000 m² · 2,500 T/monthISO 9001 · ISO 3834-2 · EN 1090 EXC3 · AS/NZS 5131 CC3 · IAS AC472
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01Designed by our own engineers
World Steel structural engineers calculate to Thai and international codes and produce the Tekla 3D model, approval drawings and every shop drawing. Nothing is outsourced.
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02CNC cutting and drilling
Plates and sections cut by plasma, laser and CNC drilling lines straight from the model, with first-piece inspection before the batch runs.
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03Built-up members welded in-house
Submerged-arc welding lines and qualified welders make columns and rafters to ISO 3834-2 and EN 1090 EXC3.
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04Inspected before it leaves
Dimensional checks, UT and MT weld testing and paint thickness readings, recorded piece by piece in the QC dossier you receive.
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05Blasted and painted in the factory
Shot blasting and an ISO 12944 paint system chosen for inland, coastal or port sites, or intumescent fire protection up to R120.
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06Packed by erection zone, shipped CIF
Every piece marked, bundled by erection zone and loaded so the first members your erector needs reach site first.
Scope of supply
What you receive, and what stays local
A clear split of work keeps your budget and schedule predictable.
World Steel designs, makes and ships
- Structural design and calculations to Thai and international codes
- Approval drawings for your Thai engineer (กว.) to review and sign
- Main steel frame, C/Z purlins, bracing and all connection bolts
- Shop painting or fire-protection paint, packing and CIF shipping
- QC dossier, erection drawings and remote technical support
Your Thai team on site
- Site survey, soil investigation and foundations
- Building permit with the local authority or IEAT
- Unloading at site and erection by your contractor or our partners
- Roof and wall sheeting, doors and MEP (or sourced in Thailand)
Thai codes and standards
Designed to pass Thai permitting
Building Control Act B.E. 2522
Construction permit from the local authority, or IEAT inside an industrial estate; we prepare the structural drawings and calculations.
DPT 1311-50 · DPT 1301/1302-61
Thai wind and seismic standards applied for the province of your site.
Engineering Profession Act B.E. 2542
Your licensed Thai engineer reviews and signs; we answer every comment.
Road authority approval
Bridges over public roads need approval from the road owner (e.g. Department of Highways or the local authority); your Thai engineer leads the submission.
Work we have delivered
Bridge references
Steel bridges and footbridges we designed, fabricated and delivered. These are outside Thailand and are shown as references.
2025
Singapore
Foot Bridge
Steel bridge
52020
Singapore
Steel Bridge
Steel bridge
5
2023
Vietnam
CFG Long An Bridge
Steel bridge · 196 T
8Projects outside Thailand are shown as references with the same type of structure.
Why World Steel
One partner from first sketch to Thai port
Exporting to Thailand since 2018
Steel buildings for manufacturers, developers and retailers across Thailand.
Our own certified factory
20,000 m² in Tay Ninh, 2,500 T a month, ISO 3834-2 and EN 1090 EXC3 welding quality.
Engineers, not traders
The team that designs your structure is the team that answers your Thai engineer and supervises fabrication.
CIF or DDP to your site
Shipped to Laem Chabang, Bangkok, Map Ta Phut or Songkhla, with documents for your customs broker.
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Thai contractors, design-build & EPC firmsFAQ
Questions Thai clients ask us
Have you built bridges in Thailand?
Our bridge references so far are in Singapore and Vietnam. We design to the same standards for Thailand and work with your Thai engineer and contractor for approvals and erection.
Do you install the bridge?
We design, fabricate and deliver. Lifting and installation are done by your Thai contractor; we provide weights, lifting points and technical support.
How long can one section be?
It depends on the transport route. We plan section lengths and splices with you before fabrication.
Can the bridge have a roof and lift?
Yes. Roof cover, enclosures, stairs, ramps and lift towers can be part of the same package.
Which design codes do you use?
The code agreed for the project with your engineer, commonly AISC/ASCE or Eurocode, checked against Thai requirements.
Other project types
Steel structures for every type of building
Steel warehouses & distribution centresFactories & manufacturing plantsCold storage & food processingRetail stores & supermarketsCar parks & multi-storey buildingsAircraft hangars & wide-span buildingsMarkets & community buildingsSports halls & leisureAgriculture & agro-industryShowrooms, offices & residentialEnergy & industrial plantsMezzanines & equipment platformsMulti-storey steel buildingsCanopies, carports & walkwaysExtensions & re-roofing frames
Planning a footbridge or link bridge?
Send the span, width, location and any access needs. We reply within one working day with a concept and budget.