Barrier device with external reinforcement structure

A barrier wall, comprising:

• a number of barrier devices each including:
• (i) a top wall, a bottom wall, opposed end walls and opposed side walls interconnected to collectively form a hollow interior;
• (ii) at least one opening extending through said hollow interior from one of said side walls to the other of said side walls;
• (iii) a first beam extending along one of said side walls and a second beam extending along the other of said side walls, each of said first and second beams having opposed ends;
• (iv) at least one mounting bracket extending through said at least one opening in said hollow interior, said at least one mounting bracket being mounted to said first beam and to said second beam to connect said first and second beams together along their respective side walls;
• adjacent barrier devices being connected together end-to-end to form wall, an end-most barrier device being located at one end of said wall and having a first beam and a second beam each with an exposed end;
• a pair of end connectors each having opposed ends, one end of each of said end connectors being connected to said exposed end of one of said first and second beams of said end-most barrier device, said opposite ends of said end connectors being mounted to one another.