Overall management and engineering services in the fields of road construction, tunnel construction, BSA and environmental planning for SIA phase 31 for the Rothenthurm bypass, consisting of an approximately 2.7 km long new line with a mining tunnel (approx. 2/3) and open lines including a connection to the best. Road north and south of it (a total of approx. 1/3 of the new line length).

Overall management and engineering services in the fields of road construction, tunnel construction, BSA and environmental planning for SIA phase 31 for the Rothenthurm bypass, consisting of an approximately 2.7 km long new line with a mining tunnel (approx. 2/3) and open lines including a connection to the best. Road north and south of it (a total of approx. 1/3 of the new line length).