Eastern ring road Biel
The approx. 4,9 km long Eastern ring road around the city of Biel/Bienne runs from exit Brüggmoos till exit Bözingenfeld and comprises 2 tunnels. The approx. 1,5 km long tunnel Büttenberg and the approx. 2,5 km long tunnel Längholz. Both tunnels will be equipped with a ventilation system designed for normal and emergency operation.
Zitron Nederland performs following tasks for this project:
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