Sentence:  Finding an address east to west is fairly simple . The numbering begins at Central Avenue and moves logically and predictably either west through the <WSD>avenues</WSD> or east through the streets, so you know that 2400 East Camelback is at Twenty-Fourth Street or 4300 West Indian School is at Forty-Third Avenue . 
Meaning of the word marked with <WSD> tags:  A street, especially, in cities laid out in a grid pattern, one that is in a particular side of the city or that runs in a particular direction.