Providing a risk based approach to large scale civil engineering works

Nicholas O’Dwyer has acted as employer’s representative and contractor’s designer on many tunnelling projects in Ireland and abroad. We understand constructability and, when required, tailor-make our design according to the construction challenges. We work collaboratively with our clients, adopting a practical approach to design with a central focus on constructability and delivery of value-engineered solutions. This includes a multidisciplinary method encapsulating all aspects of tunnelling design linked carefully with contractors’ capabilities and preferred practices. With almost 100 years’ experience in infrastructural and tunnelling design, we strictly adhere to schedules throughout the process and consistently bring projects in on time and to budget.

We provide a full suite of planning, preliminary design, detailed design and construction support for all your tunnelling requirements. We have designed complex solutions, including bespoke trenchless designs to connecting utilities where traditional top-down shaft construction is not feasible, to tunnelling solutions in very challenging ground conditions, which require extensive soil improvements, including various techniques such as soil mixing.

Our expertise

  • Full suite of tunnelling options
  • Geotechnical design
  • Temporary works design
  • Preliminary design and options assessment
  • Detailed design
  • Programme management including BIM scheduling
  • Traffic management assessments
  • Permitting and statutory licencing
  • Environmental monitoring and surveying
  • Construction management and monitoring

Our latest tunnelling projects