by Rachael Bower-Yekpe | Jun 19, 2025 | Water
In streets south of Paris, a seemingly ordinary underground construction site. And yet, every day, engineers stopped by to see quite a unique drilling operation … When renovating the wastewater network in L’Haÿ-les-Roses, one question had project managers...
by Rachael Bower-Yekpe | Jun 10, 2025 | Electricity
Two parallel trenchless crossings, passing under the T7 tramway, were completed last week just north of Paris’ Orly airport. Though they weren’t the longest, they weren’t the simplest either ! With a busy dual carriageway, one of France’s biggest shopping centres and...
by Rachael Bower-Yekpe | May 5, 2025 | Oil & Gas
Although this auger boring crossing is relatively short, its impact is far-reaching. The 30-metre-long structure will allow GRDF to expand its biomethane initiatives — turning organic waste into biofuel — and marks another important step in energy transition. When the...
by admin-optimum-549 | Oct 3, 2024 | Electricity
Crossing just 40 metres under SNCF rails in Montvicq (Auvergne-Rhône-Alpes) was the missing link in a 20 km project to enable RTE to connect an industrial client in central France to its network. Following initial feasibility studies, OPTIMUM advised that an...
by admin-optimum-549 | Jun 26, 2023 | Electricity
Proud to have helped Engie complete a further network extension of project Thassalia in Marseille last week, to supply both heat and cooling to city buildings through marine geothermal energy. But just a few months ago, the question of how to cross the tramway on...
