by Rachael Bower-Yekpe | Apr 23, 2026 | Water
It’s not only trenchless crossings that need geotechnical expertise. OPTIMUM has been supporting Eiffage over recent weeks on a different sort of mission: the demolition of an ageing ovoid sewer section to make way for a new storm overflow valve chamber.This crucial...
by Rachael Bower-Yekpe | Nov 13, 2025 | Oil & Gas
When 70km of Teréga’s gas transmission network needs to be replaced, trenchless crossings are inevitable. This project has over 50 of them !!! – some short, some long, some relatively straightforward, others highly complex. But each one needed careful analysis and...
by admin-optimum-549 | Aug 10, 2023 | Oil & Gas
As 6 trenchless crossings were successfully completed for a GRTgaz DN300 gas pipeline diversion in northern France recently, the importance of having trenchless expertise from a project’s outset was again apparent. The crossings pass under rivers, roads, a brownfield...
by admin-optimum-549 | Aug 25, 2022 | Oil & Gas
Great to have accompanied Teréga during the extensive Mont – Ogenne project in southwest France, a key step of which was completed a few days ago thanks to great teamwork and some pretty impressive equipment ! • – Two parallel 500-metre-long HDD crossings, DN650...
by admin-optimum-549 | Jul 28, 2022 | Electricity
• Persan : Six 175m – 200m long HDD crossings under rivers and the A16 Paris – Calais motorway• Noyales : Four 90m – 120m long HDD crossings under rivers and roads in arable / pasture land• Romainville : Six 85m – 110m long HDD crossings in a heavily built-up...
