by Rachael Bower-Yekpe | Mar 2, 2026 | Water
After 17 days of meticulous tunnelling — passing just 66 cm beneath two major wastewater pipes — a 1,730 mm (external) / 1,400 mm (internal) diameter microtunnel in Port-Jérôme-sur-Seine (near Le Havre) is now complete. The 159‑metre-long microtunnel will double...
by Rachael Bower-Yekpe | Feb 5, 2026 | Electricity
To complete the connection to Endesa’s solar power plant in Puertollano, southern Spain, only one task remained: a 200-metre-long trenchless crossing under the Madrid-Seville high-speed railway line and the adjacent Ciudad Real-Puertollano-Badajoz railway. However,...
by Rachael Bower-Yekpe | Dec 18, 2025 | Electricity
Trenchless works are now complete on another key RTE project: a network extension to supply France’s first supercomputer hosting centre, created to meet the rising demands of businesses in big data, artificial intelligence, and digital simulation. Located just south...
by Rachael Bower-Yekpe | Dec 11, 2025 | Oil & Gas
OPTIMUM is proud to have accompanied NaTran throughout the trenchless works — a combined 1300m across two microtunnel crossings — successfully completed yesterday near Aix-en-Provence in southern France.Installed at more than 25m deep, this crossing will ensure the...
by Rachael Bower-Yekpe | Nov 27, 2025 | Electricity
OPTIMUM was alongside project manager SOBECA recently for the successful completion of trenchless works near Lille in northern France, contributing to RTE’s network renewal in the region.Some short trenchless projects can be just as challenging as longer ones. This...
