[dwighttk]

I lived at a 600 Carver St for a while. It was technically 600 West Carver. We would get mail for people in 600 East Carver (which was too far away to end up in a list of closest same addresses, and should have been a different address anyway) but the names of the people at the addresses and the presence or absence of east or west in the addresses never seemed to disambiguate the addresses reliably for the post office.

[ghaff]

I live on Main St. It used to be North Main until quite a few decades ago when an interstate spur cut through the road a little ways down. (Basically, the road makes a hard turn near the middle of town and apparently Main St. just used to be, well, the main street in town before the turn.) Now North Main is reserved for just a small spur that dead ends at the interstate and river.

When I moved in (pre-consumer GPS days) I used to be regularly berated by service people for giving them the wrong address when I told them Main St. because a lot of the maps still showed North Main at least a decade or two later. And, somewhat amusingly, I observe that the telcos (Verizon and Comcast) STILL (maybe 5 decades out) still show my address at N MAIN. (When I bought the house, as I recall, there was even some paperwork that XXX Main St. was really the same address as XXX North Main St.

Although this change probably predated that, the introduction of E911 in the US led to a lot of cleanup of address irregularities such as summer cabins that didn't really have a proper address, rural delivery without a street address, roads with a break in the middle, etc.