Robert Maillart's apparently fragile concrete arches
are sublime landmarks in the Swiss alpine landscape.
In the Landquart rail bridge at Klosters, for instance,
the deck follows a smooth horizontal curve in plan to
facilitate traffic. To achieve this effect the arch is as
wide as the deck at mid-span but much wider at the
abutments. Undoubtedly integration of the supporting
arch, the stiffening wall, and the traffic platform into
one cohesive unit were Maillart's main design principles.