Device for the production of retaining walls or earth bridges from a reinforced solid mass, comprising a latticework on the facing (3), and reinforcing reinforcements, characterized in that said facing lattice is in the form of a bracket (3), comprising a substantially vertical portion (3-1) and a horizontal portion (3-2), thus almost free standing, having loops (9) formed during manufacture, at the end of the return horizontal lattice (3-2), obtained by bending bars (10-1) constituting the horizontal return (3-2). These said bars (10-1) are the continuity of all or part of the vertical bars (10) of the lattice of the facing. These loops can be open (9) or closed (9-1) by welding (9-2). The loops are used for connecting reinforcement reinforcement to the lattice of the facing by means of a connecting element (11) passing through said loops. The linear element is wedged between the hollow (9-2) of the loop (9) and the reinforcing armature that surrounds it. The connection element is a linear element of round section, hollow as a tube (11) or solid bar (11-1), steel or composite material.
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