HAL - Ecole des Ponts ParisTech is the Ecole nationale des ponts et chausséess Repository. Ecole nationale des ponts et chaussées is an Engineering School training high-level engineers in the fields of civil engineering, sustainable development, environmental science, mechanical engineering, physics, geotechnics, hydraulics, mathematics and computer science, urban development, transportation, economics. The interface is in French and English and has an RSS feed.