I was giving someone two sets of directions to South Carolina in which I commented on the roadwork on I-95 in North Carolina as a reason to consider going a different way. In doing so, when I was looking at the map I took note of the somewhat odd situation involving US-70 near Smithfield and Selma (https://www.google.com/maps/@35.5315508,-78.2839979,12.63z). That first map link is zoomed out to give the overall picture of where US-70 Business goes–it diverges from the mainline US-70 between the interchange near the word "Oliver" on the map and the point at the far top left of the map near Powhatan. (Note I'm using a 21-inch monitor, so that may not all display on your screen.)
If you zoom it in closer, you see the roads passing near the outlet malls at I-95's Exit 97 (https://www.google.com/maps/@35.5199018,-78.2786734,14.38z). That can be a very busy area; among many other businesses, the JR Cigar Outlet that's advertised up and down I-95 is located there. In order to alleviate traffic through the I-95 interchange and the traffic lights to either side, a US-70 "By-Pass" (hyphenated per the BGSs for it) was constructed to avoid those traffic lights and the I-95 interchange. If you look at the BGS at either end of the new "By-Pass," (https://goo.gl/maps/EVb1qNRmSeE4TZ6T9) you'll see that the route that they bypassed is signed as just plain US-70.
But wait, there's more! The map shows that US-70 ALT splits off between the light near the JR Cigar Outlet and Princeton, running through Pine Level, effectively acting as another business route (https://www.google.com/maps/@35.5021605,-78.2405353,13.67z).
So in the same area, you have Smithfield's US-70 Business, Pine Level's US-70 ALT that acts like a business route, plain old US-70 that bypasses the business route and the ALT route, and then By-Pass US-70 that bypasses plain old US-70 near I-95 and the outlet malls (i.e., it bypasses the original bypass).
Long way of saying, this means there is a designated bypass route that is not a bypass of the designated business route. It made me think of how in Lynchburg, Virginia, when the existing US-29 bypass was itself bypassed, the old bypass became the new business route and the old business route was downgraded to a state route. I assume that option was either not considered in North Carolina or was unpalatable to Smithfield authorities. What I'm wondering is, how many other–if any–situations are there where there is a route formally designated as a bypass that is not a bypass of the formally designated business route? (To clarify, by using the word "designated" I'm trying to exclude situations like in Nags Head where residents call US-158 "the bypass" in comparison to NC-12, which they call "the Beach Road.")
For a time there were two US 70 Business routes and unbannered US 70 followed today's US 70 Bypass.
A real short time.
It is possible it was posted this way as paperwork and postings don't always match up neatly. I want to say it was posted at least on I-95 BGSs but this is 25 years ago trying to remember...
But here is the 2nd US 70 Business being created July 1997 - see pg. 3 at https://connect.ncdot.gov/resources/safety/Route%20Changes/Route%20Changes/US64_19970725.pdf
Here is this US 70 Business going away and US 70 Bypass coming into the picture, October 1997 - see pg. 2 at https://connect.ncdot.gov/resources/safety/Route%20Changes/1997_10_31B.pdf