The contract includes design and construction of the 2km underground extension, which has two stations and will be built using a TBM. Construction will start at the end of this year and is due to be completed in mid-2015.

Astaldi is already working on the construction of the initial 9km phase of Line 5 in a consortium with FCC, Spain, and Romanian partners AB Construct and ACM Delta. The value of this project to Astaldi is €215m.