Design and construction of the tunnel under the Avet ski trail

Project name: Design and construction of the tunnel under the Avet ski trail

Promoter: ENSISA

Year: 2009
Location: Andorra 

Description: Design and construction of the tunnel under the Avet ski trail to solve a junction with the main blue track of Soldeu (Grandvalira)
Length: 80 m
Average gradient: 12%