you don't have to take bolting , and welding separately , you can still take the one,,,,structural steel/welding special inspector exam,,,,,go to the web site,,,,get the toll free number and tell them you want the "one" exam,,,,,they'll tell you that you'll find it in the "legacy" (like he said , whats that...?),,,,,,,anyway,,,trust me , you can still do the old one , they'll tell you what the other separate ones are for.....my buddy just went through the same thing,,,,,he's in L.A.,,,,did it all in march.......
and if "I" were you,,,,I'd get that one under your belt also,,,,,,there's a whole bunch of things in there that your CWI don't cover.......
some inspectors have them and never use them,,,,and others can't work without them.......
its only $200.00 and the "both" of them together look real good together.......
and like UCSB said,,,,,places like L.A. have a hold on things as far as their cert goes,,,,,you have to posses the ICC cert , just to take their test.......but f you want to work the city, you need their licence also......
good luck........