Thought of this with California's post-1990s reluctance to create any new numbered routes at all, particularly with the relinquishment setup that leads to situations like "TO 1" near Marina Del Rey and Route 82 being cut back to I-880 in San Jose.
Taking my home state as the obvious example:
Most recent state routes (thanks to GaryA for reminding me of the border 7 and 11 routes!)
- newly designated state route (as an extension of an existing Interstate) - 210 in 1999, replacing 30 east of 57
- newly designated from scratch - 11 at the Otay Mesa border area which was designated in 1994 and finally built starting 2019-present, preceded by 7 in 1990 (opened 1995), then 231/241/261, all created in 1986 (231 no longer exists due to changes in 241/261 and 133 routings) then opened in the late 1990s
- newly signed (after years of no signage) - 262 in 2000, which not only now has had acknowledgement from I-680 for two decades, but now has a few trailblazers (notably coming off I-680 and at least one coming off I-880), several overhead street blades with the route number on it, and an active freeway upgrade proposal. Plus the brief time 112 was signed about 14-15 years ago. (114 signage from 101 near Willow Road in Menlo Park was temporary)
- most recent state business route: Business 156 in Hollister, maybe preceded by Business 58 in Mojave along former US 6/466
Most recent Interstate:
- signed: I-105 along the Century Freeway in 1992, though the number had been planned and mapped since the late 1960s
- most recent designations: I-710, I-238 and I-880 in 1984, preceded by I-110 and I-980 in 1981 and I-780 in 1976 - note this will change when/if 15/905 route type changes happen in San Diego, and California did try to submit 210 east of 57 as an interstate in the late 90s but wasn't approved at the time. (905 was first created as a route number in 1986, along what was 1959-1972 southernmost portion of Route 75 then 1972-1986 Route 117)
Most recent US route:
Alternate US 50 in the 1990s, though that is only an emergency detour whose signage has mostly been deprecated in recent years.
Arguably, Alternate US 40 from Davis to Reno along what is now 113, 99, 20, 70 (and US 395) would then be the most recent before that, existing only from around 1952 to 1964
In terms of business routes: Business US 101 in Petaluma dates to 1997, Business US 395 in Ridgecrest (which is not a former routing of US 395 at all) is also relatively recent though not sure when it was created
Most recent mainline US route in California might be US 95 (replacing 1934 state route 195) and US 395 (replacing portions of 1934-1958 State Route 7 and 1934 State Route 95) ca. 1938-1939; US 6's former extension to Long Beach occurred a bit before this time.
TX:
* I-2 and I-14 are 2 of the latest new interstates. I-69's suffix splits (I-69E,C,W) are only the second instance of those in the state.
* The latest US addition I know of would be a business route of US 175 in Poynor after a recent widening project included a bypass of the town. The upcoming Loop 88 around the south and west parts of Lubbock is supposed to become a new US 84 bypass there, which would mean a new business route of US 84 would take its place through the city.
I'm not sure about the newest state-level routing/numbering in TX.
If you check the Wisconsin board, STH 195 was just commissioned on what was CTH KR east of I-41/94 on the Racine/Kenosha county line. Google maps don't even show the change yet.
Quote from: -- US 175 -- on November 24, 2024, 06:26:19 AMTX:
* I-2 and I-14 are 2 of the latest new interstates. I-69's suffix splits (I-69E,C,W) are only the second instance of those in the state.
Though not in place yet, I recall I-27 having a planned suffix split (E/W) somewhere.
I wonder if Texas will eventually have more suffixed interstates than any one state has suffixed US routes! Between the removal of Riverside/San Bernardino's I-15E in 1982 (when suffixed interstates were generally discouraged from being created after that point) and the creation of the 69 splits in 2013, we went 31 years without new letter designations, then potentially one decade in Texas gave us 5 new ones (and counting), in a state that already had 35E/35W.
MA 129A, all the way back in 1996. Our routes are pretty stable.
Two possible answers for Indiana depending on how you look at it.
The last designation to be made was IN 329 in 2015, but it had existed previously from 1984-1999.
The last designation of a route that didn't previously exist was IN 931 in 2013.
Colorado:
Interstate: I-76 west of I-25 in 1993
US Highway: US491 renamed from US666 in 2003
State Route: CO21 in 2007
Quote from: hotdogPi on November 24, 2024, 07:58:15 AMMA 129A, all the way back in 1996. Our routes are pretty stable.
I'm surprised it was that recent.
I'm not counting QC 136 in 2018 because we already have one that was unsigned until 2008.
The most recent ones are the A-30 spurs (A-530, A-730, A-930) in 2011.
MN is TH 167 in the 2020s, which was a renumbering of a portion of TH 67 after 67 had to be rerouted following a permanent closure of its old route due to a slide along the Minnesota River. TH 167 may also not be long-lived as its primary purpose was to connect to a state park that has since been eliminated.
In Arkansas, Interstate 57. It's so new, that it's not even signed yet.
Interstate: I-74 formally appeared in 1996, but is completely unposted. Next oldest is I-464 in 1987 I think?
US Highway: US-311 re-appeared in 2012 (through it previously existed back until 1934). US-15 ALT Farmville appeared in 2015.
State Route: VA 460 appeared in 2020, VA 372 (#3) might have been created after that?
Connecticut:
Interstate: 291, signposted 1992 (but designated 1957); or 691, designated 1976, posted 1987
US, new number: 202, June 1934
US, reused number: 6A, Killingly, 1959
State, new number: 244, designated Feb. 1, 1988
State, reused number: 130, 1992
The last one I can think of for sure in PA was PA 297 replacing PA 295 in 2018. I think everything else like the CSVT so far has been realignments of existing routes.
Quote from: -- US 175 -- on November 24, 2024, 06:26:19 AMTX:
* I-2 and I-14 are 2 of the latest new interstates. I-69's suffix splits (I-69E,C,W) are only the second instance of those in the state.
* The latest US addition I know of would be a business route of US 175 in Poynor after a recent widening project included a bypass of the town. The upcoming Loop 88 around the south and west parts of Lubbock is supposed to become a new US 84 bypass there, which would mean a new business route of US 84 would take its place through the city.
I'm not sure about the newest state-level routing/numbering in TX.
I'm trying to research the newest FM, loops and spurs but it looks like the most recently designated SH route is SH 84 in Laredo. The most recent route to be built and signed looks like it's SH 9 in 2014
Quote from: Thing 342 on November 24, 2024, 11:35:36 AMInterstate: I-74 formally appeared in 1996, but is completely unposted. Next oldest is I-464 in 1987 I think?
US Highway: US-311 re-appeared in 2012 (through it previously existed back until 1934). US-15 ALT Farmville appeared in 2015.
State Route: VA 460 appeared in 2020, VA 372 (#3) might have been created after that?
VA 410 #4 (Powhatan State Park, not on Virginia Hwys Project yet) was created in 2023, so that beats them both. The CTB notes indicate that VA 372 #2 was decommissioned way back in 2005, so VA 372 #3 probably existed long before it was finally posted.
Quote from: achilles765 on November 24, 2024, 03:16:58 PMQuote from: -- US 175 -- on November 24, 2024, 06:26:19 AMTX:
* I-2 and I-14 are 2 of the latest new interstates. I-69's suffix splits (I-69E,C,W) are only the second instance of those in the state.
* The latest US addition I know of would be a business route of US 175 in Poynor after a recent widening project included a bypass of the town. The upcoming Loop 88 around the south and west parts of Lubbock is supposed to become a new US 84 bypass there, which would mean a new business route of US 84 would take its place through the city.
I'm not sure about the newest state-level routing/numbering in TX.
I'm trying to research the newest FM, loops and spurs but it looks like the most recently designated SH route is SH 84 in Laredo. The most recent route to be built and signed looks like it's SH 9 in 2014
I was thinking FM 4000 might have been the newest, officially designated in 2013, though there's probably one that's newer that used a lower number.
Newest loop might be 564 (2010), though there are a couple that are unbuilt (88, 1853). Newest spur I think is 195 (2016).
For California, wouldn't the current CA 11 be newer (or CA 7)?
Quote from: TBKS1 on November 24, 2024, 11:27:19 AMIn Arkansas, Interstate 57. It's so new, that it's not even signed yet.
Except on Google Maps anyway. Along with AR-440->I-440. And quite recently, actually signed, US-78.
Quote from: GaryA on November 24, 2024, 07:00:16 PMFor California, wouldn't the current CA 11 be newer (or CA 7)?
Possibly newer than 241/261 on paper yeah.
I'll edit my post
11 was designated in 1994 (and signed maybe a year or two ago), 7 was designated 1990 and signed 1996
US 395 Business in Ridgecrest was commissioned by AASHTO in 1989. That is in fact the newest Business Route approved by AASHTO in California.
Quote from: TheStranger on November 24, 2024, 09:04:39 PMQuote from: GaryA on November 24, 2024, 07:00:16 PMFor California, wouldn't the current CA 11 be newer (or CA 7)?
Possibly newer than 241/261 on paper yeah.
I'll edit my post
11 was designated in 1994 (and signed maybe a year or two ago), 7 was designated 1990 and signed 1996
It's still staggering to me that the most populous state and one of the top five in total area last initiated a new route
thirty years ago. No matter what your view is on the state of the automobile, that borders on absurd.
Maybe it's because I've lived somewhere that mints new routes every year or two, but also decommissions a few here and there as well.
Alabama SR 304 came about in a letting about 4 years ago, was just signed last year.
Quote from: formulanone on November 24, 2024, 09:13:24 PMQuote from: TheStranger on November 24, 2024, 09:04:39 PMQuote from: GaryA on November 24, 2024, 07:00:16 PMFor California, wouldn't the current CA 11 be newer (or CA 7)?
Possibly newer than 241/261 on paper yeah.
I'll edit my post
11 was designated in 1994 (and signed maybe a year or two ago), 7 was designated 1990 and signed 1996
It's still staggering to me that the most populous state and one of the top five in total area last initiated a new route thirty years ago. No matter what you're view is on the state of the automobile, that borders on absurd.
Maybe it's because I've lived somewhere that mints new routes every year or two, but also decommissions a few here and there as well.
Alabama SR 304 came about in a letting about 4 years ago, was just signed last year.
California's route reluctance is the product of several factors:
1. Using the shields to show CalTrans maintenance rather than as navigational aids
1A. Relinquishment (i.e. cutting 82 back to 880)
2. Proposed state highway corridors getting built...but by local entities, leading back to #1. (Four examples come to mind: River Road along planned Route 181 east of Guerneville, Richmond Parkway along the planned Route 93 path, Vasco Road upgrade to boulevard standards along the planned middle section of 84, and the Southeast Connector near Elk Grove which covers part of planned 148. Others i remembered: Placer Parkway occupies a small portion of planned 102, Union City is planning to construct about a half mile of road on the ROW of an 84 boulevaed bypass route, and Harbor Boulevard/Fullerton Road arguably is a county road connection between the two segments of 39)
Special mention to the surface street boulevard extension of 126 in Santa Clarita that was built after the portion east of 5 was taken off the state highway log.
Illinois-
TOLL IL-390 (2013)- formerly the Elgin-O'Hare Expressway
Will be taken over with the new TOLL I-490 (the O'Hare West Bypass) in 2026
Quote from: TheStranger on November 24, 2024, 09:27:14 PMCalifornia's route reluctance is the product of several factors:
1. Using the shields to show CalTrans maintenance rather than as navigational aids
Looking at the history of small relinquishments is like watching spilled water dry. What was once continuous ends up showing a gap or two, and then gets sparser and sparser until it's finally gone. I think this approach to signage makes no sense. California doesn't need to put up signs to keep track of what they're supposed to maintain. I'm sure they have scriveners with quill pens and big ledgers for that. And we drivers don't give a crap. Signage should be for driver navigation, and removing signage (the exhortation to maintain TO bannered signs is usually ignored) is no help.
The most recently designated in Oregon have been:
OR 132, the Delta Highway in Eugene, designated in 2020;
OR 127, the Cornelius Pass Highway, designated in 2021.
Both were fairly quickly signed as state routes after receiving their designations. However, several of the state routes designated back in 2002 from formerly route-less state maintained highways are still not signposted 22 years later.
I-880 for Iowa, back in 2019.
I-11 and SR 173 in Boulder City were created at the same time, in 2018.
Interestingly, since Nevada renumbered its highway system in 1976, there have only been five new routes commissioned. They are:
- SR 294 south of Winnemucca (1981)
- SR 171, the McCarran Airport connector from I-215 (1994)
- SR 172, the old section of US-93 approaching Hoover Dam (2010)
- SR 439, USA Parkway east of Sparks (2015)
- SR 173 (2018)
Quote from: TBKS1 on November 24, 2024, 05:08:07 PMQuote from: achilles765 on November 24, 2024, 03:16:58 PMQuote from: -- US 175 -- on November 24, 2024, 06:26:19 AMTX:
* I-2 and I-14 are 2 of the latest new interstates. I-69's suffix splits (I-69E,C,W) are only the second instance of those in the state.
* The latest US addition I know of would be a business route of US 175 in Poynor after a recent widening project included a bypass of the town. The upcoming Loop 88 around the south and west parts of Lubbock is supposed to become a new US 84 bypass there, which would mean a new business route of US 84 would take its place through the city.
I'm not sure about the newest state-level routing/numbering in TX.
I'm trying to research the newest FM, loops and spurs but it looks like the most recently designated SH route is SH 84 in Laredo. The most recent route to be built and signed looks like it's SH 9 in 2014
I was thinking FM 4000 might have been the newest, officially designated in 2013, though there's probably one that's newer that used a lower number.
Newest loop might be 564 (2010), though there are a couple that are unbuilt (88, 1853). Newest spur I think is 195 (2016).
I think you're right. Actually I think FM routes are designated chronologically so likely 4000 is the most recent.
For Washington, it's SR 213, an unsigned little spur off US 97 that was finally added to the state highway inventory in 2008 after decades as a legislated but unacknowledged route.
Michigan- M-343 in the Kalamazoo area (2019)
Ohio- OH 702 in Brillant (2023)- unsigned, OH 823 aka Portsmouth Bypass (2018)
Arizona- SR 24 (2014)
For West Virginia:
- BYPASS US 522 near Berkeley Springs: Signs installed in 2024, but road not open yet
- WV 243 near Martinsburg: Signs installed in 2024 on an existing road
- WV 108 near Bluefield: Opened in 2023 on a new section of the King Coal Highway
- WV 43 near Morgantown: Opened in 2011
- WV 273 near Fairmont: Opened in 2010
For Maryland, I believe it's US 219 Business in Grantsville, established 2021.
CA-11
Quote from: Quillz on November 28, 2024, 06:42:49 PMCA-11
Odd that two adjacent states both got an unrelated 11 recently, especially since it's such a low number.
Ontario's newest highway is the 418 (opened Dec. 9, 2019).
Quote from: TheHighwayMan3561 on November 24, 2024, 10:48:41 AMMN is TH 167 in the 2020s, which was a renumbering of a portion of TH 67 after 67 had to be rerouted following a permanent closure of its old route due to a slide along the Minnesota River. TH 167 may also not be long-lived as its primary purpose was to connect to a state park that has since been eliminated.
That state park still existed 2 months ago. Has it been turned back since then?
Not counting 167, the most recent Minnesota route that still exists would be TH 336, created in the mid-1990s (authorized in the early '90s but may not have been signed for a few years). Two other routes were created after 336 but have since been decommissioned: TH 312 (along the then-completed segments of the US 212 freeway in Eden Prairie), and TH 323 (a short-lived loop off of the also-decommissioned TH 298 in Faribault).
Not counting completion of the Interstates (like I-93, which wasn't opened until 1982), only two new routes have been created in Vermont in the past ~50 years: VT 289 in the early 1990s, and VT 279 in 2004.
Quote from: froggie on November 29, 2024, 09:39:59 AMQuote from: TheHighwayMan3561 on November 24, 2024, 10:48:41 AMMN is TH 167 in the 2020s, which was a renumbering of a portion of TH 67 after 67 had to be rerouted following a permanent closure of its old route due to a slide along the Minnesota River. TH 167 may also not be long-lived as its primary purpose was to connect to a state park that has since been eliminated.
That state park still existed 2 months ago. Has it been turned back since then?
It was officially transfered from the state to the Upper Sioux Community in February.
Quote from: Scott5114 on November 29, 2024, 08:10:48 AMQuote from: Quillz on November 28, 2024, 06:42:49 PMCA-11
Odd that two adjacent states both got an unrelated 11 recently, especially since it's such a low number.
The interesting part of this for me is how California's post-1964 number recyclig just seems to be "oh, it's available, let's use it regardless of importance or route length" which is how 7 and 11 became short border connectors. 21 and 31 have remained unused since the 1970s and in theory could have been used instead of the 2x1 format for the three Orange County tollways.
(7 went from "major north-south connector to west LA" in 1934, to "oh, we need to use the number now for the Long Beach Freeway to prevent duplication with I-15" in 1964, to a short spur that is on the same latitude as Route 115 nearby in the 1990s)
The newest state roads in Florida are SR 686A (https://www.aaroads.com/guides/fl-686a/) and SR 690 (https://www.aaroads.com/guides/fl-690/), the tolled Gateway Expressway system linking I-275 with PIE Airport, U.S. 19 and CR 611 (Bayside Bridge) in Pinellas County. These collectively opened on April 26, 2024.
Prior to that, State Road 28 appeared on FDOT GIS data along newly built Philip Grifitts, Sr. Parkway in Panama City. The route appears to remain unposted as of 2023 GSV imagery.
While there have been a number of frontage roads added as unsigned state roads in Miami-Dade as of late, the last designation for a service road to actually be signed is SR 160 (https://www.aaroads.com/guides/fl-160/) along a snippet of Killearn Center Boulevard between SR 61 and U.S. 319 in Tallahassee. This was posted around 2010.
Before that by 2007, SR 23 (https://www.aaroads.com/guides/fl-023/) was designated along Chaffee Road, and then Branan-Chaffee Expressway, predecessor to the First Coast Expressway, in Jacksonville.
Interstates, I-295 (https://www.aaroads.com/guides/i-295-fl/) was signed along the east beltway in place of SR 9A around Jacksonville in 2011. The last newly designated Interstate in Florida was I-595 (https://www.aaroads.com/guides/i-595-fl/), which initially opened in 1988.
For U.S. Highways in Florida, U.S. 301 Bypass (https://www.aaroads.com/guides/us-301-bypass-fl/) was designated along the Baldwin Bypass in Duval County in 2010. Before that, U.S. 301 ALT (https://www.aaroads.com/guides/us-301a-fl/) was signed along the Starke Truck Route in 2019. Both bannered routes for U.S. 301 were formally approved by AASHTO in 2021.
Delaware's more recent state route is SR 54 ALT (https://www.aaroads.com/guides/de-054a/) linking SR 54 with SR 26 at Bethany Beach in Sussex County. The route was established in 2004.
SR 24 ALT (https://www.aaroads.com/guides/de-024a/) was also established sometime between 2004 and 2006 between U.S. 113 south of Georgetown and SR 1D/23 at Five Points. Signs for the route were removed by 2016.
The last non-banned state route in Delaware to be designated is SR 286 (https://www.aaroads.com/guides/de-286/), which is an extension of Maryland Route 285 east from Chesapeake City to SR 15 in New Castle County. Signage for SR 286 appeared in 1993 along with a long extension of SR 15 north from Kent County to SR 71/896 at Summit Bridge.
For U.S. highways, U.S. 9 Truck (https://www.aaroads.com/guides/us-009-truck-de/) was formally approved by AASHTO in 1983. This may be the only time AASHTO was involved with the establishment of a truck route for a U.S. Highway. There was also a short-lived U.S. 13 Bypass (https://www.aaroads.com/guides/us-013-de/) designated along SR 1 between U.S. 13 at South St. Georges and SR 72 at Wrangle Hill. It was posted from 1995 to 1998.
I-895 (https://www.aaroads.com/guides/i-895-de/) was the most recent Interstate designated in the First State. It was a temporary renumbering of I-95 through Wilmington during a major reconstruction project from 1979 to 1982. I-495 (https://www.aaroads.com/guides/i-495-de/) was the last Interstate in Delaware to be constructed, which started in 1968 and was finished in 1977.
Quote from: Scott5114 on November 29, 2024, 08:10:48 AMQuote from: Quillz on November 28, 2024, 06:42:49 PMCA-11
Odd that two adjacent states both got an unrelated 11 recently, especially since it's such a low number.
CA reuses lowest available numbers. Next would be 21.
Quote from: Quillz on November 30, 2024, 02:15:41 AMQuote from: Scott5114 on November 29, 2024, 08:10:48 AMQuote from: Quillz on November 28, 2024, 06:42:49 PMCA-11
Odd that two adjacent states both got an unrelated 11 recently, especially since it's such a low number.
CA reuses lowest available numbers. Next would be 21.
And Nevada doesn't use two-digit numbers at all, other than 28 and 88. But 11 is an Interstate.
As mentioned elsewhere, SD's newest designation is SD 1889, to be signed likely sometime next year after the state legislature approves the highway redesignations relating to the move of US 14 and US 83 to the bypass route in Pierre.
Quote from: Scott5114 on November 27, 2024, 06:48:18 AMI-11 and SR 173 in Boulder City were created at the same time, in 2018.
Interestingly, since Nevada renumbered its highway system in 1976, there have only been five new routes commissioned. They are:
- SR 294 south of Winnemucca (1981)
- SR 171, the McCarran Airport connector from I-215 (1994)
- SR 172, the old section of US-93 approaching Hoover Dam (2010)
- SR 439, USA Parkway east of Sparks (2015)
- SR 173 (2018)
The work that resulted in the creation of I-11 and SR 173 in 2018 also prompted the creation of US 93 Business (former US 93).
I think you only looked at one table out of three on the Wiki page for Nevada state routes. There were quite a few more new state routes within the 500/600 urban series and the 700/800 secondary series designated during the 1990s or later. The most notable additions:
- SR 564, Lake Mead Pkwy in Henderson (2002) - This had been the eastern half of SR 146, before I-215 was built on top of the center portion in the late 1990s (Clark County co-signed SR 146 with I-215 for a while, but NDOT doesn't overlap state highways with other routes)
- SR 659, McCarran Blvd loop in Reno/Sparks (2009) - Portions were former SR 650 & 651, removed from state maintenance by the early 2000s, but then the whole loop brought back under state maintenance under one new number.
- SR 613, Summerlin Pkwy in Las Vegas (2018)
Is NV-171 real? I see it in OpenStreetMap, but not in TravelMapping.
As a byproduct of the rerouting of US 77 around Fremont, Nebraska, Google Maps now shows NE Spur 27E connecting US 77 to the small community of Inglewood, Nebraska. Inglewood lies between downtown Fremont and the Platte River. I don't know why it exists, but it's big enough to need a connection to the state highway system.
Quote from: pderocco on February 13, 2025, 04:21:39 AMIs NV-171 real? I see it in OpenStreetMap, but not in TravelMapping.
It is not in Travel Mapping due to lack of signage. (https://forum.travelmapping.net/index.php?topic=2958.msg13419#msg13419)
Quote from: 74/171FAN on February 13, 2025, 06:25:52 AMQuote from: pderocco on February 13, 2025, 04:21:39 AMIs NV-171 real? I see it in OpenStreetMap, but not in TravelMapping.
It is not in Travel Mapping due to lack of signage. (https://forum.travelmapping.net/index.php?topic=2958.msg13419#msg13419)
Kind of a weird reason since other unsigned routes are in TM.
Quote from: Rothman on February 13, 2025, 06:58:55 AMQuote from: 74/171FAN on February 13, 2025, 06:25:52 AMQuote from: pderocco on February 13, 2025, 04:21:39 AMIs NV-171 real? I see it in OpenStreetMap, but not in TravelMapping.
It is not in Travel Mapping due to lack of signage. (https://forum.travelmapping.net/index.php?topic=2958.msg13419#msg13419)
Kind of a weird reason since other unsigned routes are in TM.
Generally in the US, TM is only including unsigned interstates. There are definitely exceptions (such as MD 896, which is included because it is a short part of the longer signed DE/MD/PA 896) and probably some routes in Puerto Rico that do not have GSV coverage.
We have had internal discussions on adding unsigned state routes in the US, but nothing has been implemented. (https://forum.travelmapping.net/index.php?topic=4114.0)
For Wisconsin it's WI-195, designated November 2024
For Wyoming, unless I'm mistaken, it would be WYO344 and WYO346 in 1998 that are the designations for former US87 where it was closed by the landslide.
Michigan:
State highway: M-343.
Interstate: I-69 for mainline, I-275 overall.
US highway: US-45 for mainline, US-33 was newer but no longer exists in the state ending in Elkhart, Indiana currently. Business US-131 around Constantine for overall.
Tennessee's newest route currently is TN 690 the by-pass around Union City in northwest TN, it's a temp designation for what will be I-69. As for Pennsylvania, I think PA 760 is newest for state routes and I-295 near Philadelphia as part of I-95's relocation to the eastern edge of the Turnpike. Also PA 297 in my native York County is pretty new too.
Quote from: 74/171FAN on November 24, 2024, 02:31:18 PMThe last one I can think of for sure in PA was PA 297 replacing PA 295 in 2018. I think everything else like the CSVT so far has been realignments of existing routes.
I still think that PA 297 is technically later than the others.
Kentucky adds state routes all the time, but the most recent designation I can think of is Interstate 169, which is the former Pennyrile Parkway between the Western Kentucky Parkway (now I-69) and I-24.
Louisiana:
Interstates: unsigned I-910 along business US 90 in New Orleans is the most recent designation in 1999. I-510 on 1992 is the most recent signed Interstate. The most recent addition to the interstate system is I-49 north of Shreveport
The most recent US Route is Bypass US 79 in Homer in 2011
State routes: LA 3242 In St Tammany Parish near Bush in 2024
iPhone
Quote from: Max Rockatansky on November 24, 2024, 09:09:42 PMUS 395 Business in Ridgecrest was commissioned by AASHTO in 1989. That is in fact the newest Business Route approved by AASHTO in California.
And, IIRC, 395 never ran through Ridgecrest at all. So it's a "fake" business route in the sense there was no "old road" in the first place.
Quote from: formulanone on November 24, 2024, 09:13:24 PMQuote from: TheStranger on November 24, 2024, 09:04:39 PMQuote from: GaryA on November 24, 2024, 07:00:16 PMFor California, wouldn't the current CA 11 be newer (or CA 7)?
Possibly newer than 241/261 on paper yeah.
I'll edit my post
11 was designated in 1994 (and signed maybe a year or two ago), 7 was designated 1990 and signed 1996
It's still staggering to me that the most populous state and one of the top five in total area last initiated a new route thirty years ago. No matter what your view is on the state of the automobile, that borders on absurd.
Maybe it's because I've lived somewhere that mints new routes every year or two, but also decommissions a few here and there as well.
Alabama SR 304 came about in a letting about 4 years ago, was just signed last year.
It's because California only signs routes that are state maintained. The moment it stops being state maintained, it stops being a route. Which goes against practical logic. It's very dumb.
I can't say enough times that routes should exit for navigation. The typical motorist does not care who maintains the road. If you need to ensure this information is known, use the miner spade with a different color.
County routes are also rarely signed.
Quote from: JayhawkCO on November 24, 2024, 08:54:29 AMColorado:
Interstate: I-76 west of I-25 in 1993
US Highway: US491 renamed from US666 in 2003
State Route: CO21 in 2007
State Route: CO85 in 2025
Quote from: Quillz on May 05, 2025, 01:10:03 PMQuote from: Max Rockatansky on November 24, 2024, 09:09:42 PMUS 395 Business in Ridgecrest was commissioned by AASHTO in 1989. That is in fact the newest Business Route approved by AASHTO in California.
And, IIRC, 395 never ran through Ridgecrest at all. So it's a "fake" business route in the sense there was no "old road" in the first place.
You're correct in that never was aligned through Ridgecrest. All the same I think if you're going to look the concept of what a Business Route should be then US 395BL fulfills the requirements. AASHTO has never had a rule which stipulated that a Business Route needed to be former alignment. I'm honestly surprised that AASHTO was even consulted by 1989.