Bridge Title
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Name Billwil Bridge, Switzerland
Design Robert Maillart
Where Billwil, Saint Gallen, Switzerland
Latitude N 47 27' 35"
Longitude E 09 09' 49"
Why Takes road over River Thur to village of Billwil
When 1904
Overall type Arch with 3 hinges.
This was Robert Maillart third bridge design - he was developing his idea of a three hinged arch. The closed spandrel makes the bridge appear to be a beam structure of variable depth.
Rise of arch 4 m.
Main spans 2 spans of 35 m.
Materials Reinforced concrete
How to read a bridge Read more about arches.....

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Pictures from Robert Gregory & David Blockley, UK