Modular Steel Truss Bridge

Installation of a modular steel truss bridge is a multi-stage process that is significantly faster than conventional construction. After the foundations (abutments) are prepared, the prefabricated modules are delivered to the site. They are then assembled on the ground using high-strength bolts and lifted into place by cranes. The erection time depends on the bridge size and site conditions but is typically measured in weeks, not months. KXD can dispatch an experienced technical team to guide your local crew through this process.

The load capacity is determined during the custom engineering phase. Our structural engineers use specialized software (Tekla, PKPM, 3D3S) to model the bridge and analyze its performance under various load combinations, including the client’s specified vehicle weights (e.g., trucks, emergency vehicles), traffic frequency, wind loads, and seismic considerations. The final design of every member and connection is calculated to safely exceed these requirements, with designs capable of adhering to international standards like AASHTO or Eurocodes upon request and verification.

With a proper corrosion protection system, a KXD heavy-duty steel bridge is designed for a service life of 50-100 years. The key to longevity is the quality of the surface coating. Our multi-layer paint systems and hot-dip galvanizing options are designed to withstand specific environmental conditions. Maintenance typically involves periodic inspections of bolted connections, drainage systems, and the paint coating, with touch-ups required as per the inspection schedule—a significantly lower maintenance burden than many other bridge types.

Absolutely. While they are excellent for temporary or industrial use, our modular steel bridges are primarily designed and fabricated as permanent infrastructure solutions. They are suitable for use in public road networks, and our engineering team can design them to comply with the specific requirements of local or national transportation authorities, including considerations for safety barriers, deck surfacing, and load ratings.

A truss is an incredibly efficient structure. It uses a triangular arrangement of members to distribute loads, with some members in tension and others in compression. This allows a truss bridge to achieve longer spans with less material and a lower overall weight compared to a solid beam bridge of the same length and capacity. For medium to long-span crossings, a steel truss bridge construction often provides the most structurally and economically optimal solution.