PURPOSE: To reduce the number of parts for bridge structure and to improve apperance by uniformly constituting storm rails and a canopy part.

CONSTITUTION: Since a flange part 21 is provided at the upper end part of the bridge main body 15, an inclined wall 22 is formed at the roof 16, and these flange part 21 and inclined wall 22 are overlapped, it forms a wall which extends catercorner upward at the upper end of the bridge 14, therefore this part is made into a canopy and fulfills the function as storm rails. In other words, since the wall extends toward the outside upward part, it shades sunshine which incides into the bridge 14, and prevents rain water which has stagnated on the roof 16 from directly dripping through the front side and lateral side of the bridge main body 15.