France / UK interconnection

France / UK interconnection

As part of RTE’s French-UK interconnection project, the dual trenchless crossing in Frénouville is now finished. Both 140 metre-long, 10-metre-deep, HDD crossings, passing under one of Normandy’s busiest rail routes, required precision control at every stage....
Rail crossing in Normandy

Rail crossing in Normandy

Drilling 20m below the busiest railway in Normandy calls for the highest levels of vigilance and expertise. By accompanying RTE’s trenchless project in Harfleur on a daily basis and assisting drilling operations around the clock, OPTIMUM ensured the railway network...
Dual pipeline crossing at Cubzac

Dual pipeline crossing at Cubzac

The dual gas pipeline crossing of the Dordogne at Cubzac is complete. By reworking the project engineering and assisting technical operations on a daily basis, OPTIMUM managed to halve both the drilling costs and the project timeframe. We are proud to have been able...