PR Newswire/Les Echos/

Boulogne, August 30, 2010

                                  PRESS RELEASE

                   A 63 Highway concession in southwest France

Atlandes, a consortium led by Colas Sud-Ouest comprised of two Colas
subsidiaries (Colas Sud-Ouest, Screg Sud-Ouest), Spie batignolles, NGE, Egis
Projects, HSBC European Motorway Investments 1 and DIF Infrastructure II, was
selected by the French Ministry for Ecology, Energy, Sustainable Development and
the Sea as the preferred concession operator for Highway A 63 between the towns
of Salles and SaintGeours-de-Maremne in southwest France.

The 40-year concession contract will cover the design, finance, build and
operations of a 105- km section of Highway A 63 between the towns of Salles and
Saint-Geours-deMaremne. The work involves the upgrading and widening of former
Route RN 10 to a 6-lane roadway compliant with current Environmental and Highway
standards to ensure better safety and customer service.

The 1.1-billion euro project includes the initial payment of 400-million euro
entry fee (in return for availability of existing infrastructure for a duration
of 40 years). The concession contract is scheduled for signature at the end of
December 2010.

The construction consortium, led by Colas Sud-Ouest and which also comprises
Screg Sud- Ouest, Valérian, a Spie batignolles company and NGE, will be in
charge of performing the work, slated to begin in September 2011 once the design
phase has been completed. The contract value for the construction grouping will
be roughly 500 million euros (Colas 40%, Valérian 30% and NGE 30%). The
concession will be operated and maintained by a dedicated subsidiary of Egis
Road Operation and should be fully opened to toll traffic by July 2014.

                             For further information: 
       Delphine Lombard (tel. 33 1 47 61 76 17) lombard@siege.colas.fr
                      
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