Borderline Streets that have directional indicators only for one community

[roadman65]

In New Jersey along NJ 27 where it straddles the Roselle- Linden Border it is known as St. George Avenue by both cities.  However in Linden it is East St. George Avenue to fit in with Linden's street grid which uses Wood Avenue as a base line. All roads on the west side of Wood Avenue are West x Street or Avenue while to the east side its East X Street or Avenue in that city.  Roselle has its own street grid and for them to use East St. George would not fit into theirs so its just St. George (though they sign it plural on street blades).

Technically East St. George Avenue is only half the street as the Roselle- Linden Border is the whole border from the base line Wood Avenue to the Elizabeth City Line where all of the street is not fully within Linden.  The West St. George Avenue is both sides in Linden as the Roselle border turns with Wood Avenue and all of the Linden-Roselle Line is on either Wood Avenue or NJ 27 from Cranford to Elizabeth.

Is there any roads in two communities straddling a border that is East X Street, but on the other half just X Street?

[Eth]

This one is a little ambiguous:

Pharr Road partially straddles the border between Atlanta and Decatur, GA. By Decatur's naming system, it's West/East Pharr Road, switching at McDonough Street. However, this sign, an Atlanta install, shows it as just Pharr Rd without the prefix (it instead gets a NE suffix based on Atlanta's quadrant system). It's ambiguous, though, because some of the Atlanta signs further down the street do include the W/E prefixes in addition to the quadrant suffixes (but not all of them, such as this one on the west half).

[1995hoo]

Not sure whether this counts: Western Avenue, along the DC—Maryland line, is signed as Western Avenue NW on the street signs on DC's side of the street and as plain Western Avenue on the street signs on Maryland's side. The street is located entirely within the District, however.

I've never paid attention to whether Eastern and Southern Avenues are the same way.

[MNHighwayMan]

Is there any roads in two communities straddling a border that is East X Street, but on the other half just X Street?

Not between two communities, but rather the city of Des Moines and unincorporated Warren County: County Line Road, east of South Union St, is known as East County Line Rd on the incorporated Des Moines (north) side, to conform with the city's address grid, and just County Line Rd on the unincorporated Warren County (south) side. The best part about this is that one side of the street would be 100 E County Line Rd, while the other is something like 10100 County Line Rd.

[pianocello]

I have a near-miss: The village of Oak Park is immediately west of Chicago, with the dividing line being Austin Blvd. In Oak Park, the dividing line between N and S is the UP railroad ROW that Metra and Green Line trains run on, about 4 blocks north of the dividing line between N and S in Chicago (Madison St). Rather than causing confusion making a 4-block stretch of Austin Blvd be S Austin in Oak Park and N Austin in Chicago, it looks like both sides of the street adopt Chicago's address numbering.

[formulanone]

The streets and avenues of the Ensley neighborhood of Birmingham are all labelled "X Street Ensley" or "Y Avenue Ensley".

It was annexed into Birmingham in 1910 but was probably denoted that way on signs because of the abrupt changes to the street numbering grid by preserving Ensley's road pattern.

[ghYHZ]

A bit OT...

106 CanUSA Street, Derby Line Vermont 05830 is on the right........ but across the street is 9 Rue Canusa, Stansted Quebec J0B 3E5. The border runs right down the middle of the street.

https://goo.gl/maps/a99BhgGJ2HT2

...and even though the speed limit sign is on the US side of the street.....it's posted as 50 (km/h)   

[Brandon]

I have a near-miss: The village of Oak Park is immediately west of Chicago, with the dividing line being Austin Blvd. In Oak Park, the dividing line between N and S is the UP railroad ROW that Metra and Green Line trains run on, about 4 blocks north of the dividing line between N and S in Chicago (Madison St). Rather than causing confusion making a 4-block stretch of Austin Blvd be S Austin in Oak Park and N Austin in Chicago, it looks like both sides of the street adopt Chicago's address numbering.

That's less confusion than one can get along Theodore Street, the border between Joliet and Crest Hill (former EJE Junction Line east to IL-53).  Joliet has the evens on the south side of the street.  Crest Hill has the evens on the north side of the street.  Hence, east of the Junction Tracks, Theodore Street has no odd numbers.

[bzakharin]

36th Street forms part of the border between Camden and Pennsauken, NJ. On the Camden side it is "North 36th Street" (though most blades say "N 36"), while on the Pennsauken side it's just 36th Street. Oddly, the only two traffic-lit intersections show "36th Street" on both sides and "N 36th Street" on both sides respectively. Interestingly, the street numbering scheme is continuous between the two cities (or rather, Camden's numbers continue into Pennsauken 13 blocks up to 49th street before ending), but Pennsauken doesn't have the suffixes Camden has.