Up and down the street - usingenglish.com

Up and down the street

As a rule of thumb, in the US if you walk along the street and the addresses go higher (35 Main Street, 40 Main Street, 48 Main Street, etc), then you're walking "up" the street." If the addresses descend (30 Main, 24 Main, 20 Main), then you're walking "down" the street. It is also used in relation to your own physical position on the street. If you are giving someone directions from where you're standing, you'd say "it's three blocks up the street" if you wanted them to head north, and "three blocks down the street" if they needed to go south.

"Down the street" and "along the street" are always correct, though, and easily understood