This segmental bridge is a model of a typical segmental box
beam bridge. The concrete segments are either cast on-site
and attached to the piers or pre-cast and brought to the
construction site. Once constructed, the segments can then
be attached to the piers using one of the following two
methods: Gantry Crane method or Balanced Cantilever method.
On most segmental bridge projects, a combination of these
methods is used to construct the bridge. Once the segments
are attached to the piers, the keystone is placed and all
the segments are post-tensioned using steel cables.
Segmental Bridges are becoming increasingly popular because
of their relatively low cost when compared to suspension or
cable-stayed bridges. Segmental box beam bridges are quicker
to construct, and less disruptive to the surrounding
This model is intended for students between the ages of
10-15. The model is fairly complicated and is constructed
from both wood and Plexiglas. Please download and review the
User Guide before requesting this model for your classroom.