Vehicle bed and cross rail attachment

A bed arrangement for a vehicle including a horizontally large floor member defined by a thin metal sheet having a plurality of raised stiffening ribs extending lengthwise thereof. The floor member has a cantilevered edge flange extending along a lengthwise side edge thereof, which edge flange protrudes downwardly below a bottom surface of the floor member. A hat-shaped cross rail is disposed transversely under said floor member, and has a pair of top flanges which supportingly engages the bottom surface of the floor member. The cross rail, where it crosses the edge flange, has a depression formed therein to provide clearance for the edge flange. The top flanges having flange sections which are deformed downwardly to define the profile of the depression while maintaining the continuity of the top flanges as they extend lengthwise of the cross rail.