Using '1' to symbolise the washington monument would be reasonable, if the washington monument was something people very commonly referred to. It would also be reasonable to describe that as phallic. It wouldn't be reasonable to use 1 to refer to an address in DC, because you're jumping from three obviously formally similar things, to the street address of one of those things.

It's a pretty good example of what people mean by free association - and why what I'm(1) doing isn't.

1- I mean, obviously I'm about the millionth person to make this particular observation.