How do you say 99 Avenida de la Falculted in spanish?

Noventa y nueve = 99.

I think the address you've given should read:

'Avenida de la Facultad' (with 'a', not 'e', in the last syllable)

Then it would all be pronounced:

'NawBENtah ee nWAYbay AhbenEEdah they lah Fah-cool-TATH' (the final 'th' as in 'the' not 'thin')