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Roads and Drainge

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COWI has developed an infrastructure capability to service the roads, and drainage needs of engineering projects undertaken throughout the company.

COWI is acknowledged for its world class engineering capability, being industry leaders in tunnelling, the development of underground space, heavy civils and complex geotechnical projects. This combined experience under-pins an efficient and highly skilled roads and drainage capability for large and small projects.

Transport solutions

Our Engineers have a wealth of experience in highway engineering and design. Projects are stand-alone or form part of a larger civil engineering undertaking. Best practice highway design and Section Agreement experience is combined with specialist knowledge of abnormal loads, complex junction and alignment analysis and design to solve challenging access problems. COWI world class ground engineering capability combines with strong industry wide relationships (with highway and tunnelling contractors, heavy haulage and lifting specialists), to offer pragmatic solutions to complex transport problems.


Construction projects can affect natural drainage regimes resulting in pollution, surcharging and flooding. It can also affect watercourse structures causing washout and ground instability. COWI experience includes drainage master planning, catchment analysis, flood risk assessment & management, and detailed design of drainage, SuDS and culverting schemes. The drainage systems are designed to be minimal and low impact, using existing flow paths, outfalls and source control wherever possible.

Efficient design

COWI engineers use the latest software design aids for highway alignment, swept path analysis, flooding and drainage. This, combined with practical ‘design and construct’ experience gives safe, buildable designs.

LAST UPDATED: 22.12.2016