Numbers derived from previous route numberings

[WNYroadgeek]

The majority of NY 415 (namely everything west of and including Painted Post) was formerly US 15.

- NY 417 (former NY 17 before the construction of the modern parallel expressway alignment to the north)

Portions of NY 17C and NY 17M were also once part of NY 17.

[GenExpwy]

The majority of NY 415 (namely everything west of and including Painted Post) was formerly US 15.

- NY 417 (former NY 17 before the construction of the modern parallel expressway alignment to the north)

Portions of NY 17C and NY 17M were also once part of NY 17.

NY 17C has always been 17C. Old 17 (Owego — Binghamton) is now NY 434.

Similar examples:

• NY 474 (Chautauqua Co.) was old NY 74. (NY 74 was moved to Essex Co., presumably to match VT 74.)
• NY 404 (Monroe Co.) was old part of US/NY 104.
• NY 488 (Ontario Co.) was part of NY 88.
• NY 443 (Albany, Schoharie Cos.) was part of NY 43.
• NY/NJ 284 was NY/NJ 84, before I-84 came along.

[DandyDan]

MN (not mentioned earlier):

Some county routes got their numbers from previous state/US highway designations, like Ramsey-49, Hennepin-122, Hennepin/Anoka-81, three different counties of County 101, and numerous instances of County 61 north of the Twin Cities.  Also, part of Hennepin-152 used to be a former routing of US-52.

Sometimes a future routing will get a temporary number based off its future number, like when MN-312 existed before that freeway was completed to be US-212.

Along those same lines, Blue Earth County road 69, which is actually by Mankato, is derived from US 169 and Faribault County 16, which is actually by Blue Earth, used to be US 16.

I seem to remember seeing it on a Minnesota map that there is a county road 52 on the way to Moorhead, but can't find it on Google maps.

[froggie]

^ Clay and Wilkin Counties (basically Moorhead to Rothsay).  The other counties used county route numbers other than 52 for their segments of former US 52.

[DJ Particle]

That didn't stop MassDOT from updating the obsolete signage last year:

*facepalm*

[SGwithADD]

The majority of NY 415 (namely everything west of and including Painted Post) was formerly US 15.

- NY 417 (former NY 17 before the construction of the modern parallel expressway alignment to the north)

Portions of NY 17C and NY 17M were also once part of NY 17.

NY 17C has always been 17C. Old 17 (Owego — Binghamton) is now NY 434.

Similar examples:

• NY 474 (Chautauqua Co.) was old NY 74. (NY 74 was moved to Essex Co., presumably to match VT 74.)
• NY 404 (Monroe Co.) was old part of US/NY 104.
• NY 488 (Ontario Co.) was part of NY 88.
• NY 443 (Albany, Schoharie Cos.) was part of NY 43.
• NY/NJ 284 was NY/NJ 84, before I-84 came along.

NY 17C from Owego to Waverly used to be NY 17 before the Southern Tier Expressway was built through that area in the 1970s.  However, the 17C designation existed well before the STE (I believe as early as 1930), so I don't think it quite counts in this case.

[Konza]

Missouri:  State routes 740 and 763 in Columbia, and 744 in Springfield.  366 and 367 are previous routings of US 66 and 67, respectfully, and 350 in the Kansas City area is a previous routing of US 50.

[sparker]

Here is a couple from the California State Highway renumbering:

CA 58 replaced parts of CA 178 and US 466 but was derived from Legislative Route Number 58.

LRN 189 became CA 189. 

Some obvious ones like 99, 66, 91, 60 and 299 came from previous US Route designations.  Some Signed County Routes like S80 and San Bernardino County Route 66 came from US Route designations.  Some Signed County Routes like J59 and J132 are obvious extensions of State Highways.  N7 might be a reference to the original CA 7 or a coincidence. 

Signed (L.A.) County N7 on the Palos Verdes peninsula was a direct extension of CA 107 (and SSR 107 after 1935 and SSR 7 before that); both 107 and N7 are part of Hawthorne Blvd.  Also, SSR 128 replaced the original SSR 28 circa 1953, when NDOT pressured CA's Division of Highways to sign their north Lake Tahoe route as 28 to match NV's number.  So the Division merely added 100 to the former route and signed it as SSR 128, later CA 128.  However, they never actually adopted an alignment from Winters east to Davis; LRN 6 always had a gap there -- although IIRC, CSAA signed the county-maintained Russell Road as state route 28 between Winters (LRN 90) and Davis (LRN 7/US 99W) when they were doing such things; the signage eventually was removed -- possibly as late as the time of the renumbering.

[bugo]

Missouri:  State routes 740 and 763 in Columbia, and 744 in Springfield.  366 and 367 are previous routings of US 66 and 67, respectfully, and 350 in the Kansas City area is a previous routing of US 50.

And MO 249 in Joplin which predates I-49 by several years. It was named after a future interstate.

[Flint1979]

M-227 comes to mind out Michigan having been spun off when US 27 was decommissioned.

Don't know if I replied to this or not but there is also a M-27 that was spun off of the old US-27 in Cheboygan County.

[ftballfan]

In Michigan:

• the second M-10 was part of US 10;
• the current M-25 was part of US 25;
• the current M-27 was part of US 27;
• M-99 was once M-9;
• the current M-120 was part of M-20;
• M-121 was part of M-21;
• M-183 was part of CR 483;
• M-227 was once part of US 27;
• The former M-331 was once US 131;
• M-343 was a part of M-43; and
• M-553 was CR 553.

I'll leave it to others to decide if M-38's number was derived from M-35 or not.

In addition to those:
The current M-10 is (mostly) former US-10
M-1 might be derived from US-10 (M-1 replaced US-10 when the latter was relocated to the Lodge)
The current M-11 is part of the former M-114

[Max Rockatansky]

In Michigan:

• the second M-10 was part of US 10;
• the current M-25 was part of US 25;
• the current M-27 was part of US 27;
• M-99 was once M-9;
• the current M-120 was part of M-20;
• M-121 was part of M-21;
• M-183 was part of CR 483;
• M-227 was once part of US 27;
• The former M-331 was once US 131;
• M-343 was a part of M-43; and
• M-553 was CR 553.

I'll leave it to others to decide if M-38's number was derived from M-35 or not.

In addition to those:
The current M-10 is (mostly) former US-10
M-1 might be derived from US-10 (M-1 replaced US-10 when the latter was relocated to the Lodge)
The current M-11 is part of the former M-114

In a twist of irony some of the US Routes took their numbers from Trunklines like M-16 and partially the original M-10. 

[theline]

Sorry for the late comment, but I just got around to reading this thread.

In Indiana, along the new US-24 expressway/Hoosier Heartland Highway, former routings of US-24 which still service towns or have plenty of traffic are designated x24.  I believe the same is true along US-31.

The only state highways currently numbered x24 are 124 and 524, and while both derive their numbering from US 24, I can't find any previous routing of US 24 that follows those routes.  Former routings through Wabash and Peru are designated as Bus US 24 (though poorly signed) and former routings through Fort Wayne, Huntington and Logansport are not designated as anything.

Former routings of US 30 and US 31 do have 900 series state routes along former routings in Fort Wayne, South Bend and Kokomo.

Add US 33 to the list of old US routings that got renumbered as SR-9xx. When US 33 was truncated at US 20 on Elkhart's south side, the portion in St. Joseph County became 933. I still wonder what was wrong with 33 running all the way to Benton Harbor, MI.

[NWI_Irish96]

Sorry for the late comment, but I just got around to reading this thread.

In Indiana, along the new US-24 expressway/Hoosier Heartland Highway, former routings of US-24 which still service towns or have plenty of traffic are designated x24.  I believe the same is true along US-31.

The only state highways currently numbered x24 are 124 and 524, and while both derive their numbering from US 24, I can't find any previous routing of US 24 that follows those routes.  Former routings through Wabash and Peru are designated as Bus US 24 (though poorly signed) and former routings through Fort Wayne, Huntington and Logansport are not designated as anything.

Former routings of US 30 and US 31 do have 900 series state routes along former routings in Fort Wayne, South Bend and Kokomo.

Add US 33 to the list of old US routings that got renumbered as SR-9xx. When US 33 was truncated at US 20 on Elkhart's south side, the portion in St. Joseph County became 933. I still wonder what was wrong with 33 running all the way to Benton Harbor, MI.

Once the US 20 bypass was completed around Mishawaka/Elkhart, INDOT no longer wanted to maintain the previous routing of US 33.  That would have forced US 33 to be concurrent with US 20 and then US 31 from Dunlap to Benton Harbor, and thus it was truncated to Dunlap. 

Elkhart city and county took over their parts of the old routing, but St. Joseph County, Mishawaka and South Bend cities refused, so thus we have 933.

[PHLBOS]

When I-95 in the DC area was rerouted along the eastern half of the Capitol Beltway (then, just I-495) during the late-70s; the portion of the Henry Shirley Highway inside the Beltway that was designated as I-95 became the current I-395.

More recently, last year; I-95 north of the PA Turnpike to US 1* in NJ became I-295 when I-95 was rerouted onto the PA Turnpike east of its crossing via the new connector ramps. 
*Prior to 1994, the roughly 3-mile stretch stretch of I-95 between US 1 and where the Somerset Freeway portion of I-95 would've connected/interchanged was originally designated as I-295.

Another MA one: MA 145 was originally MA 45 prior to 1958.  Such supposedly received its revised designation so that such route signage wouldn't be misinterpreted as a speed limit.  This is probably the reason why MA also does not have an SR 50 or 55 in its present route log.

[deathtopumpkins]

Such supposedly received its revised designation so that such route signage wouldn't be misinterpreted as a speed limit.  This is the reason why MA also does not have an SR 50 or 55 in its present route log.

And yet we have MA 30 as a fairly major route... Also MA 40. I'd say take that claim with a huge grain of salt.

[hotdogPi]

Such supposedly received its revised designation so that such route signage wouldn't be misinterpreted as a speed limit.  This is the reason why MA also does not have an SR 50 or 55 in its present route log.

And yet we have MA 30 as a fairly major route... Also MA 40. I'd say take that claim with a huge grain of salt.

30 and 40 are reasonable speeds for those roads.

[GaryV]

I used to think my dad thought I-96 was the speed limit, not the route number.

But now, I-75 does have 75 mph on much of the length in MI.  And for the parts that are not posted such, it doesn't really matter, because everyone goes that fast anyway.

[mrcmc888]

DE-202 is a former alignment of US-202.

[Bitmapped]

Other WV examples:
- WV 114 and WV 214 used to be part of WV 14, before it was split up to avoid long multiplexes.
- WV 112 was the southern section of WV 12, which was truncated to avoid being disconnected by Virginia.
- Mercer CR 120 was formerly part of WV 20
- WV 123 was formerly Mercer CR 23
- WV 131 was formerly Harrison CR 13
- WV 270 was formerly Harrison CR 27
- WV 331 was a former alignment of US 33

[pianocello]

Somebody mentioned MN 62 previously, as it was previously CR 62. What wasn't mentioned was that it was (probably) numbered CR 62 in the first place because it lines up with 62nd Street in Minneapolis's street grid.

[ozarkman417]

Missouri has mostly been touched, but here are some additional ones:
MO 571 in Carthage (former alignment of US-71)
MO 413 (former alignment of MO-13)
MO 765 (former alignment if US-65)

[US 89]

Utah's SR-30 derives its number from the old numbering of what is now Nevada SR 233.

[DJ Particle]

Somebody mentioned MN 62 previously, as it was previously CR 62. What wasn't mentioned was that it was (probably) numbered CR 62 in the first place because it lines up with 62nd Street in Minneapolis's street grid.

ROAD-CEPTION!!!!   

[TheHighwayMan3561]

Somebody mentioned MN 62 previously, as it was previously CR 62. What wasn't mentioned was that it was (probably) numbered CR 62 in the first place because it lines up with 62nd Street in Minneapolis's street grid.

ROAD-CEPTION!!!!   

Petition to create I-62 now in the works.