Basic arch viaduct - HO,N,Z - Viaduc a arches

Very simple base for a two-storey arch bridge.
Assemble multiple parts as needed.
Do your own decoration.
See
https://www.thingiverse.com/thing:6689468
for a guardrail.

Supports: with the STL files orientation, needs minimal manual tree support (see picture).

Pieces de base pour un viaduc a deux etages.
Realisez votre propre decoration.
Voir
https://www.thingiverse.com/thing:6689468
pour une rambarde.

Des supports minimum en arborescence manuelle suffisent (voir image).