![](/documents/14171717/18161850/Cabeceras.jpg/0786cea0-0ed3-81fe-ac45-4a78d2ec1e3d?t=1609245735327)
Type of work
Railways
Expo Metro
Portugal
2,777 m
total long
3
underground stations
Description
Design and construction of the Alameda-Expo red line (Lisbon metro).
The section with a total length of 2,777 meters, required 2,105 meters of tunnel with 8.80 meters of inner diameter tunnel, excavated with tunnelling machine, and three stations: Chelas, Olivais and Cabo Ruivo.