As Derek said, what kind of bench are you talking about?
Mine is more assembly table than "workbench". (as in traditional solid hand-tool bench)
The one I have is 49" wide, with a plywood leg structure and aprons. On one end it has racks for Bessey parallel clamps. The has a full width drawer, containing lesser used hardware and big hand tools. (Adjustable wrenches, Channel locks, pry bars, etc)
I don't know if this is what you are looking for, but it's what I have.