Timber Trestle Bridge

Track carried on a timber trestle: a bays knob of 2 to 8 four-metre bays and a height knob of 4, 8 or 12 m from y = 0 down to the footings; the deck rail top sits exactly at 0.30 m like plain track, sleepers on heavy stringers with guard timbers.

风格：low-poly, flat-shaded vertex colors, no textures, single shared material, so any set of these merges to one draw call; shares palette and scale with its kit