trestlework

A trestle or system of trestles, as that supporting a bridge.

A series of trestles and connected framing, supports, etc., forming a viaduct, as for a railway.

A viaduct, pier, scaffold, or the like, resting on trestles connected together.

a system of trestles, especially one used to support a bridge

a supporting structure composed of a system of connected trestles; for a bridge or pier or scaffold e.g.