Penetrating seawater carries bacteria that form colonies – biofilm. The bacteria attack the concrete that is supposed to prevent stones from loosening from the tunnel walls. The concrete becomes porous and risks breaking apart. The biofilm...

Transportes licita por 10,7 millones de euros la asistencia tcnica para construir el primer tramo de la lnea de alta velocidad Burgos-Vitoria source:https://www.transportes.gob.es/el-ministerio/sala-de-prensa/noticias/jue-08052025-1319

RETC2025 Screenshot

TunnelContact.com The List of TBM Manufacturers

The 2nd Roads, Bridges & Tunnels KSA 2025 Conference  rbtksa.com

Factory Testing Complete on DC Water’s first tunnel boring machine for the Potomac River Tunnel   source: https://www.dcwater.com/about-dc-water/media/news/factory-testing-complete-dc-waters-first-tunnel-boring-machine-potomac

Factory Testing Complete on DC Water’s first tunnel boring machine for the Potomac River Tunnel https://www.dcwater.com/about-dc-water/media/news/factory-testing-complete-dc-waters-first-tunnel-boring-machine-potomac

NAT2025 North American Tunneling Conference (Anaheim, CA)

Construction is underway as crews start digging the tunnels connecting the Eglinton Crosstown West Extension to the western end of the Eglinton Crosstown LRT (to be known as Line 5 Eglinton when it opens) at Mount Dennis Station. (Metrolinx photo)...