Arup delivers a multidisciplinary approach to tunnelling and underground engineering projects, providing a 'one-stop shop' for tunnelling projects around the world. Our underground engineering service incorporates a complete design and project management service for all types of tunnels, shafts, large excavations, caverns and mining stabilisation. Our expertise covers all tunnel related disciplines from concept to construction including architecture, civil engineering design, electrical and mechanical services, project management, fire engineering, rail safety, road safety, environmental design, aerodynamics and ventilation, vibration, risk management, value management, contract strategy, failure investigation, and expert evidence and advice. Our tunnel projects extend from inception to detailed design, operation to inspection (including automated tunnel inspection) and beyond. This total design approach, using committed engineers working closely together in a totally digital environment, has produced exciting, innovative and sustainable answers to some of the world's largest and most complex tunnel projects.