Équipe technique et projets de KXD | Groupe d’ingénierie des structures en acier | Publié le 3 septembre 2026
Un pont piétonnier à treillis en acier préfabriqué est une structure fabriquée en usine et assemblée par boulonnage, dont les dimensions sont adaptées à chaque franchissement plutôt que vendue selon un tableau fixe de dimensions. La largeur du tablier, la portée et la longueur des segments destinés au transport sont définies par l’ingénierie de chaque projet ; ce qui est standardisé d’une commande à l’autre, c’est l’approche structurelle, la quantité minimale de commande et la certification.
Pourquoi ce produit ne dispose pas d’une fiche technique universelle
Les documents de projets municipaux et les articles universitaires consacrés aux matériaux de tablier publient chacun des chiffres pour un pont donné : une passerelle nommément désignée, avec sa propre portée, sa propre largeur de tablier et son propre plan d’expédition. Aucun de ces documents ne regroupe ces données dans un tableau de sélection qu’un acheteur pourrait utiliser avant le cadrage d’un projet, pas plus que la fiche technique d’un fournisseur donné, car les ponts piétonniers à poutres treillis ne sont pas fabriqués selon une dimension de catalogue, comme le serait une poutre en I standard. La portée, la largeur et la capacité de charge sont calculées en fonction du franchissement concerné, des conditions de fondation et de la juridiction applicable en matière de normes.
C’est une situation différente de celle des produits de construction de KXD, pour lesquels l’entreprise publie une plage de portées fixe (jusqu’à 100 m) pour les bâtiments à structure métallique standard. Pour la Pont préfabriqué en acier / gamme Modular Steel Bridge (modèle KXDF-01), les informations produit publiées portent sur la configuration structurelle et les paramètres de commande plutôt que sur un tableau numérique des portées — une distinction qu’il vaut mieux énoncer clairement plutôt que de brouiller les deux gammes de produits.

Ce qui est effectivement publié pour ce produit
| Paramètre |
Détail publié |
| Structural configurations offered |
Steel truss, plate girder, welded box girder |
| Construction method |
Modular / prefabricated, bolt-up field assembly |
| Applications |
Autoroutes, voies ferrées, voies piétonnes, sites industriels, sites miniers, accès provisoires, viaducs urbains |
| Minimum order quantity |
600 m² |
| Monthly supply capacity (product line) |
8,000 tons |
| Certification listed on product page |
ISO |
| Fourchette de prix |
USD 40–100/m², depending on specification |
| Specific clear-span figures |
Not published — engineered per project |
| Deck width standards |
Not published — engineered per project |
| Shipping-segment length limits |
Not published — depends on route and transport method |
Three rows in that table say “not published” rather than a number, and that’s intentional. Filling them with plausible-sounding figures would misrepresent what KXD has actually disclosed for this specific product line, even though such figures exist informally for buildings and get requested for bridges during quoting.
How Truss Configuration Affects Span Decisions
Even without a fixed span table, the structural logic that governs pedestrian truss bridges is consistent across the industry and worth laying out:
- Triangulated members carry load more efficiently than a solid web at longer spans, which is why truss configuration is typically the default once a footbridge needs to clear a road, rail line or waterway rather than a short gap.
- Deck width is driven by expected pedestrian and cyclist volume, not by the truss span itself — a wide multi-use path crossing needs more deck width than a narrow single-file footbridge regardless of how far it spans.
- Shipping-segment length is set by route restrictions, not by an ideal fabrication size. A truss bridge that could ship as two long modules may need to be broken into three or four shorter segments if the delivery route has tight turns, low bridges or weight-restricted roads.
- Foundation and abutment design changes with span and site soil conditions, which is one reason a fixed span-to-price chart doesn’t hold up project to project.
This is also where the most common misreading happens: treating “prefabricated” as a synonym for “standardized dimensions.” Prefabrication describes how the bridge is built (shop-fabricated, shipped as modules, bolted on site) — not that every order shares a catalog span or width.
Applications Where This Configuration Gets Specified
Pedestrian crossings over roads or rail — the primary use case for truss configuration in footbridge projects, chosen for span efficiency over a plate girder.
- Multi-use paths (pedestrian plus cyclist) — deck width becomes the deciding parameter more than span.
- Temporary or relocatable pedestrian access — bolt-up assembly means the structure can be dismantled and moved if the crossing is short-term.
- Combined vehicle/pedestrian urban overpasses — sometimes paired with box girder sections where torsional loading from mixed traffic is a factor.

FAQ
Q: What span can a prefabricated steel truss pedestrian bridge cover?
A: KXD doesn’t publish a fixed span table for this product; span is engineered per crossing based on site conditions and load requirements, and gets confirmed during the quoting process.
Q: What’s the minimum order size?
A: 600 m², the same MOQ published across KXD’s bridge product line.
Q: Does a longer span cost proportionally more per square meter?
A: Pricing sits in the USD 40–100/m² range depending on specification, but span alone isn’t the only driver — deck width, load class and site/foundation conditions all factor into where a project lands in that range.
Q: Can the bridge be shipped in one piece?
A: Not usually. Modular sections are sized to route restrictions (turns, clearance, weight limits) as much as to fabrication convenience, so segment count typically depends on the delivery route, not a fixed shipping standard.
Buyers comparing pedestrian truss bridge options should treat published span and width figures from other projects as reference points, not as a menu — the numbers that matter are the ones that come back from an actual site and load review.