1. Road bridges

This section presents the most common road bridge structures. The number of combinations that can be obtained from the three components "load-bearing system", "girder" and "decking" reveals the extent of bridge solutions. Among these, the double-girder composite bridge is undoubtedly the most highly developed, and will be discussed in detail in . In another register, that of very long-span, cable-stayed and suspended bridges, this will be an opportunity to discuss large structures.