The world’s longest aluminum suspension bridge has been planned to be built in Norway. Norsk Hydro is set to provide aluminum for the bridge, according to media reports. Reports also suggest most of the structural aluminum would be extruded with 6061 alloys. The bridge would be 1720m long with a 1200m span. It is located 45km to the south of Bergen.
The Norwegian Public Roads Administration believes the total cost of an all-aluminum bridge would be equal to that of a steel bridge. Mainly since the higher price of aluminum could be offset by lower structural costs like towers, hangers, and cables. The ministry states the decision has been taken after a feasibility study, considering that aluminum’s resistance to atmospheric corrosion and its 100pc recyclability. It believes these qualities of aluminum could lower the post maintenance work for the bridge.