Pedestrian footbridge Dählhölzli Zoo, Bern

The project
Since the damage was of varying severity, various measures were also taken. In the area of the pelicans, beavers, otters and the lynx, a footbridge with viewing platforms was planned, which should also survive subsequent floods. The footbridge The approximately 140 m long footbridge was made of single-span girders of 10 m length. At 2 places platforms protrude about 10 m above the water.

The construction method
In order to protect the substructure from further flood damage, it was concreted as supports and, at the jetty - platform connection, as a slab. The glulam beams (14 x 43 cm) were attached to these at a center distance of 59 cm by means of steel angles. The floor is covered with 50 mm larch planks, which have been provided with a non-slip layer in the middle of the upper side. The whole construction is surrounded with air on all sides, so that it can dry again after each rain.