Adding a Zero to Route Numbers

[Dirt Roads]

Similar to the 3-Digit Route Number thread, but instead of adding prefix digit some states add suffix digits.  The two examples I have are not pure, so I'm wondering if there are any examples out there where a state has added a zero to an existing route number during a renumbering effort or bypass routing.

An early one from North Carolina:  NC-100 is posted on the old route of NC-10 through Gibsonville and Elon (formerly known as the town of Elon College).  After US-70 was originally routed over most of what was then NC-10, a bypass was constructed south of Gibsonville and Elon College and originally numbered NC-100.  When US-70 and NC-10 were rerouted onto this bypass (about 1929), the numbers were swapped and the old route through the towns was renumbered as NC-100.  It's not a pure example since NC-100 was renumbered as NC-10A and then renumbered back to NC-100.  Also, the route has been extended southeast around downtown Burlington almost all the way to I-85/I-40.

One from West Virginia:  WV-48 was renumbered as WV-480 during the reassignment of that number to the original US-48 over Appalachian Corridor E.  This is pretty close to being pure, except that the DOH originally derived the new number by assuming that all numbered highways correspond to their "fractional" number, hence 48-over-0 gets renumbered as 480.  There's been quite a few numbering of the "fractionals", but the first one I can remember is the renumbering of CR-35/2 to WV-622 (after the old routing of US-35 got renumbered as an long extension of WV-62.  And that's definitely not pure.

[Scott5114]

There's a section of OK-33 that was realigned to bypass a couple of towns in Logan County. The old highway was retained as a state highway but given no numerical designation, and carried on the books as "SH-0". How's that for adding a zero?

[Takumi]

I don't think Virginia has done this (the closest is VA 457 being an old alignment of VA 57 and VA 158 being essentially the business route for US 58A), but a proposed VA 5A in the Williamsburg area ended up partially numbered as secondary route 5000.

[Max Rockatansky]

This is kind of what happened in reverse with CA 44 and CA 440.  CA 44 was quickly assigned US 299 right after it was designated in 1934.  CA 440 even before it was actually field signed was reassigned as the second CA 44.  I'm still not clear what the purpose was for CA 740 given it connected to CA 74 and would later be consolidated into it.

[Dirt Roads]

Once upon a time, West Virginia had WV-290 running from US-460 in the Blue-Prince area to I-77 at the East River Mountain tunnel.  This was an upgrade to CR-29 (otherwise, 29-over-zero).  This only lasted a handful of years, as US-52 was rerouted over WV-290 and through the tunnel.  And... the old US-52 over top of East River Mountain was then renumbered as WV-598/VA-598, the highest number for a Virginia primary route.

[Dirt Roads]

WV-210 is the renumbering of Alt US-21 in Beckley after the rest of US-21 was decommissioned.

[Dirt Roads]

WV-48 was renumbered as WV-480 during the reassignment of that number to the original US-48 over Appalachian Corridor E. 

Once upon a time, West Virginia had WV-290 running from US-460 in the Blue-Prince area to I-77 at the East River Mountain tunnel.  This was an upgrade to CR-29 (otherwise, 29-over-zero). 

WV-210 is the renumbering of Alt US-21 in Beckley after the rest of US-21 was decommissioned.

I thought there was another one of these in West Virginia, but there are several more:

WV-180 is a renumbering of Alt WV-18.
WV-230 is in part a renumbering of Jefferson County CR-23 (otherwise, 23-over-zero). 
WV-270 is a renumbering of Harrison County CR-27 (otherwise, 27-over-zero).
WV-310 is a renumbering of Marion County CR-31 (otherwise, 31-over-zero).

I should have remembered the one for WV-180.  Which reminds me, Ohio has OH-550 which is a renumbering of US-50A (which itself was a renumbering of the original US-50N).  But I can't remember where this Alt US-50 crossed into West Virginia.  But I seems to recall that Alt US-50 was routed up WV-18 either to Sistersville (over the ferry into Ohio) or up WV-180 to New Martinsville (over the Veterans Bridge).  Would be quite appropriate today.

Extra shout out to Mapmikey for his fine work with the background info.

[Bitmapped]

I should have remembered the one for WV-180.  Which reminds me, Ohio has OH-550 which is a renumbering of US-50A (which itself was a renumbering of the original US-50N).  But I can't remember where this Alt US-50 crossed into West Virginia.  But I seems to recall that Alt US-50 was routed up WV-18 either to Sistersville (over the ferry into Ohio) or up WV-180 to New Martinsville (over the Veterans Bridge).  Would be quite appropriate today.

Alternate US 50 crossed the Ohio River at St. Marys. It followed WV 16 north from Ellenboro to St. Marys.

[Dirt Roads]

I should have remembered the one for WV-180.  Which reminds me, Ohio has OH-550 which is a renumbering of US-50A (which itself was a renumbering of the original US-50N).  But I can't remember where this Alt US-50 crossed into West Virginia.  But I seems to recall that Alt US-50 was routed up WV-18 either to Sistersville (over the ferry into Ohio) or up WV-180 to New Martinsville (over the Veterans Bridge).  Would be quite appropriate today.

Alternate US 50 crossed the Ohio River at St. Marys. It followed WV 16 north from Ellenboro to St. Marys.

Of course.  The old St. Marys Bridge was a twin sister of the eyebar-chain-suspension Silver Bridge and needed to be closed and demolished after investigation found a single-point failure.  Thanks.

[sbeaver44]

WV-48 was renumbered as WV-480 during the reassignment of that number to the original US-48 over Appalachian Corridor E. 

Once upon a time, West Virginia had WV-290 running from US-460 in the Blue-Prince area to I-77 at the East River Mountain tunnel.  This was an upgrade to CR-29 (otherwise, 29-over-zero). 

WV-210 is the renumbering of Alt US-21 in Beckley after the rest of US-21 was decommissioned.

I thought there was another one of these in West Virginia, but there are several more:

WV-180 is a renumbering of Alt WV-18.
WV-230 is in part a renumbering of Jefferson County CR-23 (otherwise, 23-over-zero). 
WV-270 is a renumbering of Harrison County CR-27 (otherwise, 27-over-zero).
WV-310 is a renumbering of Marion County CR-31 (otherwise, 31-over-zero).

I should have remembered the one for WV-180.  Which reminds me, Ohio has OH-550 which is a renumbering of US-50A (which itself was a renumbering of the original US-50N).  But I can't remember where this Alt US-50 crossed into West Virginia.  But I seems to recall that Alt US-50 was routed up WV-18 either to Sistersville (over the ferry into Ohio) or up WV-180 to New Martinsville (over the Veterans Bridge).  Would be quite appropriate today.

Extra shout out to Mapmikey for his fine work with the background info.

This is incredibly interesting.  I always wondered why WV 230 and WV 480 had the numbers they did considering all the other WV routes in the area.  Nothing is like 230 or 480.

[WillWeaverRVA]

I don't think Virginia has done this (the closest is VA 457 being an old alignment of VA 57 and VA 158 being essentially the business route for US 58A), but a proposed VA 5A in the Williamsburg area ended up partially numbered as secondary route 5000.

I still think that needs to become an extension of VA 321, since that would allow for a continuous VA 321 between VA 5 and US 60.

[Mapmikey]

Extra shout out to Mapmikey for his fine work with the background info.

Thank you...

I am curious why WV 305 was not numbered 170 since it was an upgrade to CR 17.  Other routes were multiple CRs cobbled together so there were no obvious renumbering choices there

VA 28 becoming VA 228 is another example of what Virginia might do in renumbering situations.  But because their secondary numbering system has no numbers below 600, it can't do what WV does when it upgrades one into the primary system.

[jp the roadgeek]

Only a few examples of number rerouting in CT that reflect an old route number, but CTDOT usually adds the number at the beginning.  The only exception I can think of is CT 99, which was once CT 9.

CT 184 used to be CT 84 until the number was needed for I-84.
CT 244 is a very old routing of US 44
CT 272 is an orphaned piece of CT 72 when it once stretched to the MA border
CT 289 is an orphaned piece of CT 89
CT 302 is an old routing of US 202
CT 372 is the old routing of CT 72 before it was placed on expressways (and later truncated).

[Dirt Roads]

Extra shout out to Mapmikey for his fine work with the background info.

Thank you...

I am curious why WV 305 was not numbered 170 since it was an upgrade to CR 17.  Other routes were multiple CRs cobbled together so there were no obvious renumbering choices there

VA 28 becoming VA 228 is another example of what Virginia might do in renumbering situations.  But because their secondary numbering system has no numbers below 600, it can't do what WV does when it upgrades one into the primary system.

Forgetful I am.  Lived on VA-228 for a short time.  Anyhow, I always thought that the conversion of "fractionals" to state route numbers was a wild hair idea when WV-622, WV-501 and WV-601 were created in Kanawha County in the mid-1970s (we used this route frequently to get to Sissonville).  Therefore, WV-305 and WV-307 made sense at the time.  Along with WV-310 near Fairmont, they were the first roads numbered in the 300 series (except for changing WV-81 to match VA-311).  After that, it seems like the DOH jumped to fractionals and the 700/800/900 series numbers.  Not sure why. 

Back to your original question though, the reason for not using the number 170 is the DOH policy to avoid duplicating Interstate suffixes (three digit numbers ending in 64, 70, 77, 79 and 81).  Of course, that didn't last very long since they renumbered a fractional to WV-270 and then got coerced into using WV-279 for the northern loop around Clarksburg (which will probably never get much farther).

[Takumi]

I don't think Virginia has done this (the closest is VA 457 being an old alignment of VA 57 and VA 158 being essentially the business route for US 58A), but a proposed VA 5A in the Williamsburg area ended up partially numbered as secondary route 5000.

I still think that needs to become an extension of VA 321, since that would allow for a continuous VA 321 between VA 5 and US 60.

Oh, I do too, but the way primary routes have to be established now, I don't think it will.

[hotdogPi]

In the "threads you'll never see" thread that shouldn't have been locked: "Adding Zero to Route Numbers"