Not number related, but this reminds me how I've had it erroneously pronounce a street name containing "Vly" (an uncommon word [0], but not an abbreviation, a whole word) as "valley". Since other street names use the former as an abbreviation for the latter, I guess it's part of a standard lookup (like how "mt" and "mtn" expand to be pronounced "mount" and "mountain") without means for an exception.

[0] https://en.wiktionary.org/wiki/vly