Sunniberg Bridge
The Sunniberg Bridge is a curved multi-span extradosed road bridge with low outward-flaring pylons above the roadway edges, designed by the renowned Swiss engineer Christian Menn and completed 1998. It carries the Klosters bypass road 28 across the Landquart River near the village of Klosters in the canton of Grisons in eastern Switzerland. It is notable because of its innovative design and aesthetically pleasing appearance sensitive to its surroundings. Design The bridge was designed by Christian Menn (conceptual design) together with Dialma Jakob Baenziger (final design) as a challenge of integrating the structural form of a curved multi-span extradosed bridge into the larger rural Alpine landscape, given the prominent location of the bridge in the Landquart valley, "but with a certain elegance". The Klosters bypass highway crosses the Landquart River valley on a long curving road bridge (horizontal radius of curvature about 500m) at a height of between 50 and 60m above the valley floor. Four slender H-shape piers rise up from the valley floor (8.80m × 4.25m at the base), like the tall trees nearby. Proceeding upwards, the arms of the tall piers/pylons flare out to subtend and sustain the wide curved and banked deck, nestling the roadway in