The term 'bridge beam' refers to the structural components of a bridge that support its weight and span. The three crossword solutions for this term are CANTILEVER (10 letters), TRUSS (5 letters), and ibar (4 letters). A CANTILEVER is a beam that is supported at one end and projects outward from the support, while a TRUSS is a structure composed of connected elements forming triangular units. An ibar is a type of TRUSS that is made up of two parallel beams connected by a series of vertical bars. All three of these solutions are commonly used in bridge construction to provide support and stability.