Cham-Hünenberg bypass

March 2025

Die Umfahrung Cham–Hünenberg ist eine Schlüsselmassnahme im Rahmen der kantonalen Verkehrsstrategie Zug. Durch den Abbau des Durchgangsverkehrs in Cham und Hünenberg wird nicht nur die Lebensqualität der Anwohner verbessert, sondern auch der Wirtschaftsstandort gestärkt.

The Cham-Hünenberg bypass (UCH) is more than just a new road. It is the last big piece of the puzzle in the transport planning of the Canton of Zug, which not only serves to bundle transit traffic, but also to free the centre of Cham from through traffic. This ambitious project, which is being implemented by the Canton of Zug’s Department of Construction in collaboration with the Ennetsee municipalities, aims to enhance living and economic areas and improve mobility for all road users.

Construction and location
Construction of the UCH has already begun and is scheduled for completion in 2027. The route runs predominantly parallel to the A4 motorway, which allows for minimal land consumption and efficient use of space. This aspect is particularly important in order not to jeopardise the planned settlement and landscape development in the Ennetsee municipalities.

Tunnelling and construction work
The main work on the Städtlerwald road tunnel began in March 2024 with the construction of the pumping stations and settling basins. The tunnel operations centre is also being built, while the pre-cut for the Stumpen tunnel portal is being constructed in parallel. The tunnel itself will have a total length of 543 metres, the majority of which will be created underground using a roadheader.

Progress of the preliminary work
Preliminary construction work has been taking place along the future UCH route since 2022 and has now been completed. The first ground works along the western UCH perimeter and neighbouring N4 national roads are already in full swing. Neighbouring woodland areas have already been cleared, with the standing tree trunks being handed over to the hydraulic engineering department for later projects.

A benefit for all road users
The Cham-Hünenberg bypass not only promises improvements for road traffic, but also positive effects on the quality of life of local residents. By relieving the congestion in the villages of Cham and Hünenberg, a quieter and safer living environment will be created, offering space for additional leisure and recreational activities. The improved transport links will also encourage companies to settle in the region, which in turn will strengthen Zug as a business location.

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