Immersed tunnel beneath the seabed

Our sectors

Tunnels & underground structures

Independent review, assessment and life-extension for tunnels and underground assets.

We provide expert advice, analysis, independent checks and design review on the geotechnical performance of tunnels and underground structures — across all phases, from design through instrumentation, monitoring and long-term asset management, including both immersed-tube and bored tunnels.

Core capabilities include:

Our technical leadership is grounded in active European research programmes, keeping our practice at the forefront of subsurface and underground infrastructure engineering.