The article presents the results of a rupture load test on a retaining wall m.ade of soilthread material Texsol. The support structure is a retaining wall 5 metres high built to widen a platform. for a teaporary deviation on the A line of the Paris regional express railroad network. The tests shov a tilt type rupture of the structure at its base, together with horizontal displacement of the overall structure. Analysis of the results by rupture calculation enables validation of the design aethod recOlllllended in the 1990 Lcpc-Setra technical guide.