I don't know if what you are looking for is on here, but this is one of my favorite sites (most chains are on here.)
www.dietfacts.com
If you can't find your exact restaurant online and corporate won't give you the info, then try to find something comparable at another restaurant and count it that way. I usually get a veggie burger (no mayo~dry bun) at our locally owned diner and I use the nutritional info from Swiss Chalet.

You gotta tweak where you can.