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HWS Sarneraatal with flood relief tunnel east: auxiliary guard [HIWE]

Bau- und Raumentwicklungsdepartement Obwalden, Amt für Wald und Landschaft Obwalden Construction work for water projects award open
Procedure: open Order type: construction SIMAP ID: 107c9164 First seen: 27 May 2026 Latest publication: 28 May 2026
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Description

Der rund 6.5 Kilometer lange Hochwasserentlastungsstollen soll im Hochwasserfall den Sarnersee entlasten. Das Hilfswehr in der Sarneraa unterstützt dabei die Seeregulierung und begrenzt im Hochwasserfall den Abfluss der Sarneraa durch Sarnen. Der Gegenstand der vorliegenden Ausschreibung sind die Ba...

AI Summary

The tender concerns civil engineering works for the flood relief tunnel, which is intended to relieve pressure on Lake Sarnen during flood events. The works include the construction of a temporary weir in the Sarneraa, which supports lake regulation and limits discharge during flood events. The tend...

  • Excavation completion using sheet pile walls and pile foundations (19 piles, approx. 16 m long)
  • New construction of weir structure (7.65 m long, 14.04 m wide, 3.40 m high)

Risk overview

  • Unverhältnismässige Anforderungen1
  • Konsortial- oder Partnerschaftspflicht1
  • Hohe Versicherungsmindestdeckungen1
  • Zu knappe Fristen1
  • Einschränkende Sprachanforderungen1
  • Sonstige KMU-Hindernisse1

Full AI Analysis

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Red Flags

6 flags identified — Overall risk: high

Financial Requirements

Technical Specifications

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About the buyer

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2
Last activity
21 days ago

Past awards in this category

  1. CHF 2,011,337Obwalden
  2. Partial renovation of Engelberg Tunnel

    Winner:Rhomberg Sersa Rail AG

    CHF 9,128,860Obwalden

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