Support materials
The official description names three support materials in this order. Exact durability values are not public, so this is a progression guide—not a fabricated stat ranking.
Progression 1
Wood
The first support material named in the official game description. Use it while learning how beams transfer vehicle weight.
Full guide →Progression 2Steel
A support material named by the developer after Wood. It is presented as part of the game's bridge-strengthening progression.
Full guide →Progression 3Titanium
The final support material named in the official description, intended for later bridge-building progression.
Full guide →Why there are no numeric scores
Every beam carries weight and can bend or snap, but the developer does not publish precise material strength. Your bridge geometry, support placement and vehicle choice all affect the result.