Roads that change names but then latter change back to the previous name.

[KCRoadFan]

Surprised that no one on this thread has already mentioned this.

US 67 in St. Louis County is known as Lindbergh Boulevard for most of its length, including through the North County suburbs near the airport, as well as Creve Coeur and Ladue. Upon entering Kirkwood (just north of Manchester Road) it changes names to Kirkwood Road, forming the main drag of that town (while also changing in character from a divided suburban arterial - complete with a strange mishmesh of traffic lights and freeway exits - to a two-lane urban street).

South of I-44 and Watson Road - when it enters Sunset Hills - the road changes back to Lindbergh Boulevard (and resumes its earlier characteristics) for the rest of its length, before eventually merging onto I-255 in Mehlville, just east of I-55 and Lemay Ferry Road.

[froggie]

^ Lindbergh Blvd got mentioned near the beginning of the thread.

Locally near me, there is Shadow Lake Rd, which for a stretch in between becomes Mud Island Rd.

[KCRoadFan]

^ Lindbergh Blvd got mentioned near the beginning of the thread.

Sorry, I just hadn't noticed it at first when I read the thread.

Anyway, here's another example - this one from my area: in Johnson County near KC, West 135th Street becomes Santa Fe Street as it goes through the central part of Olathe (heading west from Mur-Len Road). At the west end of town, it becomes 135th Street once again.

Also in Johnson County, Gardner Road changes names to Center Street as it goes through Gardner itself.

[KCRoadFan]

I remember driving roads like MD 140 and its continuation in PA, and bring amused by the progression of

TownA Rd/St/Pike (usually Pike) --> (nearing TownA) Baltimore Rd/Pike --> (in TownA) Main St --> (leaving TownA) TownB Pike --> Baltimore Rd/Pike --> Main St --> TownC Pike --> .... 

Main St was in almost every town, Baltimore Rd/Pike only for some, but it was a common (and natural) road naming pattern.

This phenomenon of naming roads for outbound destinations is very common in Kentucky, as well. Here's a summary of the name changes US 60 goes through between Louisville and Winchester (an east suburb of Lexington), to give you an example.

On the east side of Louisville, US 60 is known as Frankfort Avenue, until it merges with Alternate US 60 (which is also an example, being known as Lexington Road); east of this point, US 60 then becomes Shelbyville Road, a name which - interestingly - it retains all the way up to Shelbyville itself. East of Shelbyville, it becomes Frankfort Road until it crosses into Franklin County, where it takes the name Louisville Road as it eventually comes into Frankfort. On the east side of Frankfort, US 60 is known as Versailles Road; as it approaches Versailles, it changes back to Frankfort Road before becoming Lexington Road east of Versailles. On approach to Lexington, it becomes Versailles Road yet again. Later, on the east side of Lexington, US 60 is called Winchester Road, and in Winchester, it becomes Lexington Road again.

Anyway - you get the idea.