Quick N3 detour roadside cache.
Small magnetic container with Log only BYOP
A truss bridge is a bridge whose load-bearing superstructure is composed of a truss, a structure of connected elements, usually forming triangular units.
The connected elements (typically straight) may be stressed from tension, compression, or sometimes both in response to dynamic loads.
Many Basic types of truss bridges have simple designs which could be easily analyzed by 19th and early 20th-century engineers.
A truss bridge is economical to construct because it uses materials efficiently.