Tunnels and Bridges

Sandwell's experience in transportation planning and design spans more than half a century. Our services extend from data collection, traffic forecasting and analysis, through conceptual planning, all design stages and construction supervision. We provide the associated skills for road and rail interfaces.


Sandwell's experience in transportation planning and design spans more than half a century. Our services extend from data collection, traffic forecasting and analysis, through conceptual planning, all design stages and construction supervision. We provide the associated skills for road and rail interfaces.

Our tunnel and bridge expertise encompasses:

  • cut-and-cover and immersed-tube tunnels, for highways, subways, industrial and scientific use;
  • bridge design and construction;
  • bridge rehabilitation and/or seismic retrofitting.

We have worked extensively for transit authorities at the city, provincial and federal levels in British Columbia and Ontario.