1. Salginatobel Bridge in Schiers,Switzerland
(Schiers to Schuders)
Designed by Robert Malliart
In 1929-1930
Bridge type : Three-hinged arch with concrete joints,
formed as a hollow box girder .
Materials : Steel, Concrete.
Salginatobel Bridge is 135m long, the arch spanning
90m and rising 13.5m. The deck is at a slight angle
rising from Schiers to Schuders by 3.97m or at a 3%
gradient.

2. Dimensions of Base Plate:
The fighters 0.40 x 6.00 m ,
The vertex 0.20 x 3.80 m
Capacity: 8 tons or 350kg/m2
Height above water: 90 m
Why a three pinned joint arch ?
A three-pinned-arch was chosen for its ability to
move and adjust to the slight movements of the mountain.
Whereas a fixed arched would experience massive stress
from the movement, would crack and possibly fail.
Stresses also build up from temperature changes within
the structure. The three-pinned-arch is unaffected by these
temperature changes.