Dive summary:

• In northern France, just off the Normandy shore, the Benedictine abbey of Mont Saint-Michel has long been a tourist attraction, but the soaring abbey on an island was in danger of becoming part of the mainland because of silting caused by a causeway built in 1879.
• The solution that engineers devised includes a dam on the Couesnon River to release water in a way that helps flush silt and a bridge to replace the causeway and allow access by tour buses and pedestrians.
• The dam was built in 2009, and steelwork for the 756-meter bridge was begun last summer and will be finished this coming summer, with the causeway being erased in 2015.

From the article:

Designed by Paris-based Dietmar Feichtinger Architectes with German structural engineering firm Schlaich, Bergermann & Partner, Stuttgart, the 756-m-long bridge contains over 2,000 tonnes of steelwork. ...