Civil engineering represents a large portion of Opus staffing and workload, involving planning, design, construction and maintenance of infrastructure assets.  Facilities might include buildings, bridges, roads, tunnels, airports, railways, dams, communication and power transmission structures, and structures for water supply and wastewater and disposal systems.

Civil engineering projects which have had Opus involvement are located in all four countries where Opus has permanent offices and in many other places around the world.  Opus has been recognised in many of these projects as making a significant contribution to new technologies and techniques and for finding unique solutions to the challenges faced and in addressing the economic, social and environmental aspects of the projects.  Many of the projects worked on involve application of multiple skills to formulate solutions that are unique and represent added value to the clients and the communities in which they are located.