About TEC

TEC is a permanent joint venture partnership between leading international engineering consultants Royal HaskoningDHV and Witteveen+Bos. These two organisations are experts in their own right, particularly relating to large underground projects. The creation of TEC brings together their combined knowledge, expertise and experience, guaranteeing continuity for the successful delivery of every tunnel project.

Specialists in immersed tunnel design and construction since 1988, TEC has delivered design and construction solutions to the majority of the world’s most challenging and innovative tunnelling projects. Some of these include the Øresund Link between Denmark and Sweden, the Busan Geoje Link in South Korea, and the the 32 km connection between Hong Kong, Zhuhai and Macao in China.
Providing expertise at all stages of immersed tunnelling projects – from conception and initiation, to design, delivery and operation, we use our integral, innovative and sustainable approach to deliver a multidisciplinary range of consultancy services. These include feasibility studies, design, tender documents and evaluation, design reviews, cost analysis, detailed design and construction supervision.