Core Business

Globally recognized for our excellence in the construction of large-scale public infrastructure and for our expertise in the use of Tunnel Boring Machines (TBMs), we have completed over 190 tunnels, connecting more than 1,000 km of metros, railways, motorways, and hydraulic works.

*Data as of October 2025

Tunnelling

318km
268km
22km
TBM
Conventional
Pipe Jacking
continents
4
Continents
countries
15
Countries
Construction
152
Construction Sites
railway
41
Railways
(+167 km)
subway
18
Metro
(+61 km)
highway
16
Highways
(+300 km)
tbm
53
TBM
(+237 km)
renewables
10
Hydroelectric works
(+23 km)
hydraulic
30
Hydraulic works
(+95 km)
falanghina
Campolattaro Dam
Falanghina
GO
TBM
Sydney Metro West – Eastern Tunnelling Package
Jessie
GO
TBM
Sydney Metro West – Eastern Tunnelling Package
Ruby
GO
partenope
Lot 1A Battipaglia-Romagnano
Partenope
GO
gaia
Collettore Mediano Torino
Gaia
GO
tbm
Lot 4A Caltanissetta Xirbi - Nuova Enna
Palermo - Catania HS Railway - Lot 4A Caltanissetta Xirbi - Nuova Enna
GO
tbm
TELT Lyon - Turin
Lyon Turin High speed railway – Base Tunnel Lot 1 (SITE 5)
GO
Mont Cenis base tunnel
TELT Lyon - Turin
Lyon Turin High speed railway – Base Tunnel Lot 1 (SITE 5)
GO
E6 clean water
E6 Clean Water Tunnel
Laila
GO
wsa
Sydney Metro - Western Sydney Airport
Catherine
GO
marlene
Sydney Metro - Western Sydney Airport
Marlene
GO
peggy
Sydney Metro - Western Sydney Airport
Peggy
GO
tbm
Sydney Metro - Western Sydney Aiport
Eileen
GO
rexy
Eglinton Crosstown West Extension
Rexy
GO
renny
Eglinton Crosstown West Extension
Renny
GO
tbm
Broadway Subway Project
Elsie
GO
tbm
Broadway Subway Project
Phyllis
GO
Else
Cross River Rail
Else
GO
merle
Cross River Rail
Merle
GO
Hiwa-i-te-rangi
Central Interceptor
Hiwa-i-te-Rangi
GO
Tao Bao
Hanoi Pilot Light Metro Line Project
Tao Bao
GO
than Toc
Hanoi Pilot Light Metro Line Project
Than Toc
GO
Kathleen
Sydney Metro
Kathleen
GO
tbm_mabel_0
Sydney Metro
Mabel
GO
tbm_wendy_core
Sydney Metro
Wendy
GO
Mum Shirl
Sydney Metro
Mum Shirl
GO
Nancy
Sydney Metro
Nancy
GO
Virginia
Brenner Base Tunnel Lot "Mules 2-3"
Virginia
GO
Flavia
Brenner Base Tunnel Lot "Mules 2-3"
Flavia
GO
Serena
Brenner Base Tunnel Lot "Mules 2-3"
Serena
GO
Elisa
Riachuelo
Elisa
GO
Valentina
Riachuelo
Valentina
GO
Eufemia
Follo Line
Eufemia
GO
Ellisiv
Follo Line
Ellisiv
GO
Anna
Follo Line
Anna
GO
Magda
Follo Line
Magda
GO
Argentina
Sarmiento
Argentina
GO
Federica
Saint Martin La Porte
Federica
GO
Sofia
Pavoncelli Bis
Sofia
GO
Ippodamo
Athens Metro
Ippodamo
GO
Joyce
Legacy Way
Joyce
GO
annabelle
Legacy Way
Annabell
GO
Paola
Maldonado
Paola
GO
Walkiria
Maldonado
Walkiria
GO
Anita
Gastau
Anita
GO
beatriz
Metro Valencia L2
Beatriz
GO
Emilia
Milano Metro L5
Emilia
GO
Caterina
Metro Torino
Caterina
GO
El Encanto
El Encanto
El Encanto
GO
Carolina
Metro Caracas
Carolina
GO
Betania
Metro Caracas
Betania
GO
la joya
La Joya
La Joya
GO
felzinea
San Ruffillo
Felzinea
GO
Emilia
San Ruffillo
Emilia
GO
Betariz
Metro Valencia
Beatriz
GO
Acquatraversa
Acquatraversa
Acquatraversa
GO
gelsomino
Gelsomino
Santa Barbara
GO
Rio Blanco
Rio Blanco
Rio Blanco
GO
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