Specializing in tunnel design, we provide practical solutions to the most challenging underground problems.
We offer comprehensive design, construction management and construction claims services, with expertise extending across civil, structural and geotechnical engineering.
Every phase, one accountable team.
Our primary focus is to make a significant impact on the advancement of infrastructure projects, which in turn shape and enhance the communities we serve.
Whether you are deciding whether a tunnel is viable, designing it, building it, inspecting it a century later, or arguing about who owes whom what, the same underground specialists are involved — and the same design intent carries through from the first study to the final claim.
Seven ways we go underground.
Tunnels & Underground Engineering
From feasibility studies to innovative design, to engineering and management services during construction, we have provided innovative and practical solutions for tunnel and underground projects all over the world. We are recognized as experts in the design of tunnels, deep shafts, temporary works, portal and slope stability, deep foundations, building protection measures, and ground improvement by grouting, freezing, and dewatering.
Trenchless Engineering
From preliminary and final design to construction support, our trenchless technology experts provide comprehensive services for complex projects. We are recognized throughout the trenchless industry, and our engineers regularly guest-lecture at seminars and publish technical papers regarding the latest trenchless advances.
Tunnel Inspection & Rehabilitation
We have experts in feasibility, alternatives analysis, condition assessment, inspection, design, and construction management for tunnel rehabilitation projects. Our experts include structural engineers, geotechnical engineers, engineering geologists, cost estimators, and construction managers who provide responsive and comprehensive solutions to clients’ needs.
Advisory Consulting
Countless options exist for getting from Point A to Point B underground. There are also critical and unique factors specific to you and your project. We shape the correct path from Day 1 with our all-around underground expertise, problem-solving skills, and forward thinking.
Engineering Consulting
Our engineering consulting services include geotechnical engineering, structural engineering, computational engineering and analysis, pipeline engineering, design technology and digital engineering, civil and architectural design, sustainable design and construction, and risk assessment and mitigation.
Construction Management
Good construction management paves the way for safe, efficient project execution. We collaborate with project owners, contractors, and designers to guide cost-effective, quality implementation of design concepts as they become reality.
Construction Claims Services
Our construction claims group provides successful results to clients analyzing complex entitlement issues, schedule delays, productivity and disruption matters, and construction costs — supported by in-house engineering and construction expertise.
Our work is organised by market.
Not sure which service you need?
That is a normal place to start. Tell us about your site and we will tell you what discipline, method and team it actually takes.