BRIDGES, TUNNELS, AND STRUCTURES
Building effective bridges often involves moving mountains
Earth Tech’s core capabilities in architecture, engineering and construction make us the full-service partner of choice when it comes to designing and renovating highway, pedestrian and rail bridges, tunnels and other transportation structures. Whether prioritizing maintenance functions, working within close tolerances, or staging construction phases to keep traffic moving while work is in process, we identify our needs, develop optimal solutions and deliver a level of service and quality that exceed your expectations.
We take pride in our diverse range of structural experience for transportation projects:
- Airport Facilities
- Bus and Light Rail Transit Facilities
- Ferry Terminals
- Flyovers and Ramps
- Forestry Road Bridges
- Harbours and Marine Facilities
- Haul Road Bridges
- Parking Structures
- Pedestrian Bridges
- Railway Structures
- River Crossings
- Roadway Grade Separations
- Sound Attenuation Walls
- Tunnels and Culverts
- Utility Bridges
Our experience covers complex interchanges for private development and highway access, load rating analysis, pedestrian and special structures, superstructure and substructure needs and aesthetic considerations. In addition, Earth Tech has extensive experience with a number of construction techniques including design-build-finance-operate-maintain, above and below water construction, pre-stressed and post-tensioned concrete, cable-stayed construction and staged construction methods.
The structural engineering services provided by Earth Tech include:
- Advanced Composite Materials
- Analysis and Design
- Asset Management
- Bridge Management Systems
- Capacity Assessment
- Condition Surveys
- Cost Analysis
- Construction Administration
- Contract Management
- Evaluation of Existing Structures
- Feasibility Studies
- Geotechnical Investigations
- Historic Restoration
- Inspection and Testing Services
- Life Cycle Assessments
- Maintenance Planning and Operational Advice
- Procurement
- Program and Cost Control
- Project Management
- Protection Systems
- Rehabilitation
- Remote Monitoring Systems
- Research and Analysis
- Resident Engineering
- Retaining Walls
- Safety Assessments and Case Preparation
- Safety Barriers / Guide rails
- Seismic Analysis and Retrofit
- Services Life Assessments
- Survey
Services explicit to tunneling include:
- Bored tunnels including hard and soft rock, soft ground
- Open and closed face TBM tunneling
- Drill & blast
- NATM, shafts
- Caissons
- Adits
- Cut-and-cover tunneling including RC box construction, slurry trench walling, and top down construction
- Immersed tube tunneling including steel shells, RC boxes, composite techniques, waterproofing, and thermal analysis
- Micro tunneling using remote control equipment, thrust boring, pipe jacking, auguring, and directional drilling


