Making the choice – above ground or underground  
(ITA 2005)

International Tunneling AssociationJohn Reilly was Animateur of International Tunneling Association (ITA) Working Group 13 – concerned with a better understanding of the direct and indirect benefits of underground facilities.  

As part of this responsibility and in coodination with Working Groups 4 (Planning) and 15 (Environment) a world-wide review of the key characteristics of underground projects was initiated. Metro systems in major world cities were selected.

The Working Group gathered data from ITA Member Country representatives – including owners, engineers, suppliers and contractors.

The report was published in 2005 and can be found on the ITA website ( See also the news item regarding life-cycle costs for underground projects. Photo courtesy of QA Photos