Valentina has achieved breakthrough in Buenos Aires, Argentina.
The Mix Shield TBM with a 5.26 mt diameter has completed the excavation under the Matanza-Riachuelo river of a tunnel, for a length of more than 5 km.
Valentina has excavated on average 15 mt per day, with a peak of almost 40 mt excavated in a single day.
The Matanza Riachuelo river catchment development includes the left margin collector, the Baja Costanera collector deviation and complementary works.
The project, funded by the World Bank, will benefit more than 300,000 people living in flood affected areas.