All specialists under one roof

An enclosed bridge which goes straight into a tunnel: The new Rontal motorway approach road is designed to cause minimal noise pollution for local residents – and calls for a number of sophisticated design solutions.

Bridge, tunnel and hydraulic engineering

The Rontal motorway approach road consists almost entirely of engineering structures: The 1.4 kilometre long stretch of motorway passes through a 900 metre long tunnel which then leads onto a 160 metre long bridge. This may have been a short stretch of motorway but it was just as difficult to engineer. Tunnel and bridge engineering specialists from the Basler & Hofmann Group worked together to design the structures. Hydraulic engineering experts were also part of the team. Their role was to design a treatment system for road run-off.

A challenging bridge construction project

The Rontal bridge is a particularly unusual piece of engineering: The entire bridge is an enclosed structure so as to protect nearby residential areas from noise pollution. The roof of the bridge will be greened to help it blend in with the landscape. The slender glass-sealed steel and concrete framework gives the structure transparency and lightness. This presented a significant structural challenge which Basler & Hofmann was able to solve. 

Client:

The canton of Lucerne

Services provided by Basler & Hofmann:

Construction project: the overall management of the project, the Buchrain tunnel, the Rontal bridge, a road run-off treatment system and minor engineering structures.  

Pictures: The canton of Lucerne