AlpTransit Lot 646.1 – Stainless Steel Manholes and Inspection Chambers on the Brenno River

Following our success in the public tender launched by AlpTransit Gotthard, we fabricated and installed 4 inspection chambers and 7 drainage manholes in A4 grade stainless steel along the tunnel near the motorway junction on the railway section between Pollegio and Biasca.

The purpose of this structure is to drain water within the collection channel and to allow it to be inspected and any maintenance work to be carried out.