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  A case study of Virtual Design and Construction and BIM in the Stockholm bypass, Europe's largest road tunnel project

  The Stockholm bypass is a 21 km long motorway west of Stockholm, Sweden, that requires excavation of an approximate 50 km of rock tunnels. The Swedish Transport Administration, Trafikverket, has made several strategic decisions about using requirements management and modern design products that would lead to more efficient design, building and operation phases. Embracing the principles of Virtual Design and Construction (VDC), Trafikverket has made the decision to replace as many as possible of these traditional drawings with building information models (BIM). Prior to the detailed design, the tunnel system has been broken down into parts that are designed as BIMs. It uses Integrated Concurrent Engineering (ICE) methods to enable multiple stakeholders to work collaboratively using models.

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