>Another gotcha: in English and French, ordinal numbers are created by adding suffixes (-nd, -rd, -th, -eme etc); in many other languages they simply get a period, so "45. street" is equivalent to "45th street".
>So, if you're capitalizing after a period, check if the character _before_ it is a digit; if it is, don't.

But in an address in English, the word Street is capitalized, so this ISN'T a gotcha. Oh, but you were saying it was a gotcha in the other languages. Hmm.