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Due diligence for the Frejus Tunnel

Cassa Depositi e Prestiti

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The tunnel came into service on 12 July 1980 - the French section is managed by the French company SFTRF, and the Italian section by the Italian Concessionaire SITAF.

In the early 2000’s, following serious accidents that occurred in the Mont Blanc (1999) and Frejus (2005) tunnels, an EU Directive, 2004/54/EC, was published regarding the minimum safety requirements for tunnels and Legislative Decree 264/2006 was issued. The construction of the Safety Tunnel parallel to the existing Frejus Tunnel has therefore become a necessity in order to upgrade the infrastructure in line with legal obligations.

Our role

Steer Davies Gleave has been appointed as Traffic and Revenue Advisors by SITAF to support the financial institutions SACE S.p.A., BEI and CDP involved for the construction of the new Frejus Safety Tunnel.

How we did it

We initially reviewed the traffic and revenue forecast presented by the SITAF traffic advisors and we have updated the traffic study for the construction of the new Frejus Safety Tunnel. The safety tunnel project was originally meant to be a second service tunnel with a diameter of 8 metres parallel to the current tunnel. It was originally assumed that the second tunnel was not be open to traffic.

However some minor changes to the project characteristics will permit future opening to vehicle traffic that would therefore make it possible to have two one-way tunnels increasing drivers security.

Based on the Frejus and Monte Bianco tunnel historical traffic data we have implemented a traffic and econometric model that allowed us to predict the traffic evolution on the SITAF motorway network and Frejus Tunnel in the short-medium and long term.

The new Frejus Tunnel is expected to be in operation in 2016.

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