Milan Underground Line 5 | Italy

Excavation diameter

6.78 m

Tunnel length

1,940 m


Clay-rich limestone, conglomerate lenses

Type of support

Prefabricated segments

Completed in



Astaldi S.p.A.

Two EPB TBMs excavated in parallel in the difficult alluvial soils of Milan to build the new Line 5.

This work continues the long series of metropolitan tunnels created by SELI Overseas, which began in 2000 in Porto and continued almost uninterruptedly over the next 20 years.

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