Bridge Construction & Materials
Bridge membersThe bridge members are divided into two major categories: the superstructure and the substructure.
SuperstructureThe superstructure is the upper portion of the bridge above the beam seats where you drive or walk. Members include:
- Deck wearing surface
- Floor beams
- Traffic barriers
SubstructureThe substructure is under the superstructure and supports all of the bridge loads. Members include:
- Beam seats