I know the US routes get truncated all the time. But is there examples of interstates being truncated?
The only example I know of is I-279 in the Pittsburgh area. It got truncated to I-376 in downtown instead of going to the PA Turnpike in 2009.
I-70 in Baltimore was truncated to remove the stub inside I-695 (still some confusing signage in the field indicating the truncation hasn't occurred, or wasn't needed in the first place, but AASHTO approval was sought and received for the truncation).
I-295 in D.C. was truncated to remove part of the Southeast Freeway (now a non-freeway road), and its 11th St. Bridge segment was transferred to I-695.
I-480 in San Francisco was entirely removed from the Interstate system and turned into a state route, before its ultimate demise from the 1989 Loma Prieta earthquake.
I-210's north-south section on the Orange Freeway in southern California was truncated back to where I-210 now meets CA 57. with the north-south section being renumbered CA 57 and route number 210 was extended as a state route continuation onto what used to be CA 30.
Interstate 580 in Omaha NE ??
Quote from: oscar on November 15, 2015, 03:08:23 AM
I-70 in Baltimore was truncated to remove the stub inside I-695 (still some confusing signage in the field indicating the truncation hasn't occurred, or wasn't needed in the first place, but AASHTO approval was sought and received for the truncation).
Given that this was tied with the red line project, I imagine SHA has no reason to change or remove any signs at this point.
For another example of interstate truncation, see I-378 in Pennsylvania. I-78 originally ran through the Allentown/Bethlehem area on what today is US 22 (and was originally built as US 22 pre-interstete era). Eventually it was decided to build a newer, bigger, better freeway bypassing the area to the south and route I-78 that way. But, this meant that I-378 no longer connected to its parent. Rather than attempt to extend the freeway or leave up possibly confusing signs, PennDOT simply had it removed from the interstate system. It is now part of PA 378.
Quote from: oscar on November 15, 2015, 03:08:23 AM
I-70 in Baltimore was truncated to remove the stub inside I-695 (still some confusing signage in the field indicating the truncation hasn't occurred, or wasn't needed in the first place, but AASHTO approval was sought and received for the truncation).
Related to this, I-170 was eliminated.
I-495 in New Jersey, but that's not a straightforward case.
As far as truncation and not outright deletion as an Interstate (i.e., leaving some of the existing highway as Interstate, not removing it entirely from the system), I find I-164 interesting. INDOT's application materials stated "The overall route length of I-164 is 21.39 miles. The segment of I-164 that is proposed to be eliminated, renamed and resigned as I-69 over an existing facility is approximately 20.70 miles long." That leaves 0.69 miles of I-164 which are no longer signed and that don't connect to I-64 anymore. I-164 has been severely truncated but still lives!
Quote from: PurdueBill on November 15, 2015, 12:05:07 PM
As far as truncation and not outright deletion as an Interstate (i.e., leaving some of the existing highway as Interstate, not removing it entirely from the system), I find I-164 interesting. INDOT's application materials stated "The overall route length of I-164 is 21.39 miles. The segment of I-164 that is proposed to be eliminated, renamed and resigned as I-69 over an existing facility is approximately 20.70 miles long." That leaves 0.69 miles of I-164 which are no longer signed and that don't connect to I-64 anymore. I-164 has been severely truncated but still lives!
Unsigned, of course, and ultimately irrelevant because it's not like 69 goes somewhere else before suddenly becoming 164 for 40 seconds of the average car's trip down this route.
Quote from: jp the roadgeek on November 15, 2015, 10:55:58 AM
Quote from: oscar on November 15, 2015, 03:08:23 AM
I-70 in Baltimore was truncated to remove the stub inside I-695 (still some confusing signage in the field indicating the truncation hasn't occurred, or wasn't needed in the first place, but AASHTO approval was sought and received for the truncation).
Related to this, I-170 was eliminated.
And I-83 was truncated to downtown when the extension to I-95 was not built.
Quote from: Pete from Boston on November 15, 2015, 11:27:46 AM
I-495 in New Jersey, but that's not a straightforward case.
I-295 used to travel out to the "random spot" between Federal City Road and Route 31 before it got truncated to US 1, but I-95(M) got the last laugh since 295 will be taking over all of that freeway and into Pennsylvania once the PA Turnpike interchange is done.
Quote from: Pete from Boston on November 15, 2015, 01:25:22 PM
Quote from: PurdueBill on November 15, 2015, 12:05:07 PM
As far as truncation and not outright deletion as an Interstate (i.e., leaving some of the existing highway as Interstate, not removing it entirely from the system), I find I-164 interesting. INDOT's application materials stated "The overall route length of I-164 is 21.39 miles. The segment of I-164 that is proposed to be eliminated, renamed and resigned as I-69 over an existing facility is approximately 20.70 miles long." That leaves 0.69 miles of I-164 which are no longer signed and that don't connect to I-64 anymore. I-164 has been severely truncated but still lives!
Unsigned, of course, and ultimately irrelevant because it's not like 69 goes somewhere else before suddenly becoming 164 for 40 seconds of the average car's trip down this route.
69 is intended to go south from there, though--its end at US 41 is temporary and then once 69 is completed, an unsigned I-164 sticking off of I-69 would be a very odd vestige. It's unlikely to last that long if the interchange at US 41 is modified anyway, or if I-69 takes a different route somewhere north/east of there to make the crossing into Kentucky, but for now while it exists, it seems like I-164 is a genuine example of a truncated interstate, even if unsigned. I-495 in Maine could possibly fit the same bill, going from signed to replaced over nearly all of its length by a 2DI and now unsigned. At least its parent replaced it, versus 69 replacing 164.
Anybody been to Evansville lately to get any photos of the signage from US 41 northbound to the interstate?
There was an Indiana button copy sign on the Kentucky side of the state line the last time I was there. I wonder if it's still there?
Anybody been to Evansville lately to get any photos of the signage from US 41 northbound to the interstate?
There was an Indiana button copy sign on the Kentucky side of the state line the last time I was there. I wonder if it's still there?
Quote from: hbelkins on November 15, 2015, 08:48:58 PM
Anybody been to Evansville lately to get any photos of the signage from US 41 northbound to the interstate?
There was an Indiana button copy sign on the Kentucky side of the state line the last time I was there. I wonder if it's still there?
I have but never thought to photograph it. I may be there in a few weeks and will try to grab a shot if no one else does first.
Are you talking about the general area of Ellis Park on the "Indiana" side of the river where the state line is?
Quote from: hbelkins on November 15, 2015, 08:48:16 PM
Anybody been to Evansville lately to get any photos of the signage from US 41 northbound to the interstate?
I didn't get any pictures, but when I went through Henderson on US 41 and then north on what had been I-164 to I-64, I recall there being no signs for I-164 at all. The freeway was completely signed as I-69, even the east-west section that would be left hanging when the bridge carrying I-69 across the Ohio is built.
Would I-124 in Tennessee count in here?
Mike
I-240 in Oklahoma City used continue north of its present western terminus, along what is now I-44, ending at the present-day southern I-44/I-35 interchange. I-44 was extended to Wichita Falls in 1982 and I-240 was truncated.
Both I-820 in Fort Worth and I-635 in Dallas were truncated in favor of I-20's eventual path along the south side of both cities; all of I-820's southern section was affected between Benbrook and Forest Hill and became only I-20, despite some of the Fort Worth street addressing in the corridor still being dubbed 'SW (or SE) Loop 820'; meanwhile, all of I-635's original portion between I-35E south and the US 175 interchange saw a gradual phase-in of the I-20 designation until the last new section of I-20 was opened between Balch Springs and Terrell around ~1990.
Other affected interstates here were either rerouted or lengthened.
I-240 was originally a full loop around Memphis when the Overton Park portion of I-40 was proposed, but after the latter's cancellation, it became a 3/4 loop.
I-370 in MD was truncated back from the P&R to the Interconnector when the latter was built.
Quote from: Pete from Boston on November 15, 2015, 09:39:23 PM
Are you talking about the general area of Ellis Park on the "Indiana" side of the river where the state line is?
Yep. I'd have to go through a bunch of old photos to find my pictures of it.
Quote from: Mr. Matté on November 15, 2015, 03:32:28 PM
Quote from: Pete from Boston on November 15, 2015, 11:27:46 AM
I-495 in New Jersey, but that's not a straightforward case.
I-295 used to travel out to the "random spot" between Federal City Road and Route 31 before it got truncated to US 1, but I-95(M) got the last laugh since 295 will be taking over all of that freeway and into Pennsylvania once the PA Turnpike interchange is done.
And that brings us to I-276 which will be truncated to its new interchange with I-95/295 come 2018.
I-540 was truncated in NW Arkansas back to its original segment now that I-49 took over. It's also likely that the last mile or so of I-530 in Pine Bluff will be truncated (relocated?) when the new AR 530 to the south becomes a full limited access interstate.
Interstates other than 480 which no longer exist in California:
I-880 through the Natomas area of Sacramento (now I-80 after the original I-80 alignment through Arden/North Sacramento was removed from the Interstate system in 1982; the portion of former I-80 that was constructed to Interstate standards became I-305)
I-105 and I-110 in downtown Los Angeles (like 480, removed in 1968 - I recall the mileage freed up from those three routes being removed was then applied to the current I-105)
Quote from: english si on November 16, 2015, 11:28:57 AM
I-370 in MD was truncated back from the P&R to the Interconnector when the latter was built.
I think I-370 has always ended at the Park and Ride - prior to 2007, there was no road there and I-370 ended at ramps to the Park and Ride.
Quote from: txstateends on November 16, 2015, 10:34:23 AM
Both I-820 in Fort Worth and I-635 in Dallas were truncated in favor of I-20's eventual path along the south side of both cities; all of I-820's southern section was affected between Benbrook and Forest Hill and became only I-20, despite some of the Fort Worth street addressing in the corridor still being dubbed 'SW (or SE) Loop 820'; meanwhile, all of I-635's original portion between I-35E south and the US 175 interchange saw a gradual phase-in of the I-20 designation until the last new section of I-20 was opened between Balch Springs and Terrell around ~1990.
Other affected interstates here were either rerouted or lengthened.
In a way, I-20 got truncated. The rerouting shortened I-20 from ~650 miles to 635.
This is a photo from a few years ago of an Indiana overhead in Kentucky. It's north of the Ohio River but south of the state line.
https://flic.kr/p/dCTgyM
(https://farm9.staticflickr.com/8359/8293678145_92a6143915_z.jpg) (https://flic.kr/p/dCTgyM)
This photo is of the next overhead, right at the state line.
https://flic.kr/p/dCYEZQ
(https://farm9.staticflickr.com/8498/8294732530_3413bcbbfd_z.jpg) (https://flic.kr/p/dCYEZQ)
I don't know if it is official, but I-90 was originally supposed to extend West of I-5 to US/SR(WA) 99, but now stops at 4th Avenue (maybe), and the first exit, at I-5 is labeled at Exit 2.
There is also I-84 in Portland, which while still following its intended route, was modified after the cancelation of the Mt. Hood Freeway, requiring a Mile marker recalibration of a mile or two between what is listed as mile markers West of I-205 and those East of I-205.
Quote from: noelbotevera on November 16, 2015, 03:29:50 PM
Quote from: english si on November 16, 2015, 11:28:57 AM
I-370 in MD was truncated back from the P&R to the Interconnector when the latter was built.
I think I-370 has always ended at the Park and Ride - prior to 2007, there was no road there and I-370 ended at ramps to the Park and Ride.
A little more complicated than that.
I-370 used to end at the beginning of WMATA (transit authority) maintenance at the Shady Grove Metrorail station.
When Md. 200 was built, I-370 was truncated (perhaps in a cruel way, since it was never a very long Interstate) back to the interchange now marked "Shady Grove Metro Station," Exit 3 on both I-370 and Md. 200. What used to be I-370 between Exit 3 and the Shady Grove station became "secret" (and untolled) Md. 200A.
The eastern end of I-26 in Charleston was truncated about a half mile in 2005 or 2006 when the US 17 Arthur Ravenel Bridge, and its associated interchange with I-26, opened. The new bridge is slightly upstream from where the old bridges were. US 17 continues south on the 1/2 mile of former I-26, and has a sharp curve to the right at the location of the former interchange with the old bridges.
But I think between 2006 and now, the western end of I-26 was extended from I-81 to US 11W in Kingsport, TN. So all in all its still a longer interstate.
Quote from: wriddle082 on November 16, 2015, 06:33:40 PM
But I think between 2006 and now, the western end of I-26 was extended from I-81 to US 11W in Kingsport, TN. So all in all its still a longer interstate.
Yes, the part of the freeway between 81 and 11W originally stayed 181 when 26 was established in Tennessee, but later became 26. So I guess one could say 181 has been entirely truncated. :bigass:
Technically, I-490 in Cleveland extends east of I-77 to the E. 55th Street "T" intersection, even though BGS's off of I-77 do not list an I-490 East. With the building of the Opportunity Parkway boulevard now under construction connecting East 55th with the University Circle/Cleveland Clinic area -- including a rebuild of the E. 55th intersection -- one has to wonder if ODOT will officially truncate I-490 back to I-77 once the parkway is done.
Quote from: noelbotevera on November 14, 2015, 11:26:34 PM
The only example I know of is I-279 in the Pittsburgh area. It got truncated to I-376 in downtown instead of going to the PA Turnpike I-79 in Rosslyn Farms in 2009.
Fixed that for you, as I-279 has never intersected the PA Turnpike in any way, shape, or form..
Quote from: TEG24601 on November 16, 2015, 05:52:36 PM
I don't know if it is official, but I-90 was originally supposed to extend West of I-5 to US/SR(WA) 99, but now stops at 4th Avenue (maybe), and the first exit, at I-5 is labeled at Exit 2.
There is also I-84 in Portland, which while still following its intended route, was modified after the cancelation of the Mt. Hood Freeway, requiring a Mile marker recalibration of a mile or two between what is listed as mile markers West of I-205 and those East of I-205.
I don't think it counts as "truncated" if it was never built.
Quote from: Kacie Jane on November 17, 2015, 12:55:49 AM
Quote from: TEG24601 on November 16, 2015, 05:52:36 PM
I don't know if it is official, but I-90 was originally supposed to extend West of I-5 to US/SR(WA) 99, but now stops at 4th Avenue (maybe), and the first exit, at I-5 is labeled at Exit 2.
There is also I-84 in Portland, which while still following its intended route, was modified after the cancelation of the Mt. Hood Freeway, requiring a Mile marker recalibration of a mile or two between what is listed as mile markers West of I-205 and those East of I-205.
I don't think it counts as "truncated" if it was never built.
Speaking of Seattle, did the 405 ever run all the way to the 509 near Burien? Strange question, I know, but I always found it funny that the 405 sort of abruptly ends at the 5 interchange.
Would the I-40 reroute around Greensboro count? There were two of those in 2008, first around the Urban Loop, and then again through town, the latter of which is shorter.
Quote from: wriddle082 on November 16, 2015, 06:33:40 PM
The eastern end of I-26 in Charleston was truncated about a half mile in 2005 or 2006 when the US 17 Arthur Ravenel Bridge, and its associated interchange with I-26, opened. The new bridge is slightly upstream from where the old bridges were. US 17 continues south on the 1/2 mile of former I-26, and has a sharp curve to the right at the location of the former interchange with the old bridges ...
In a similar scenario, the construction of the Corpus Christi Harbor Bridge may result in a slight truncation of I-37:
https://www.aaroads.com/forum/index.php?topic=11684.msg2062284#msg2062284
I-75 got re-routed in Knoxville, TN on to I-640 instead of going downtown on what is now I-275. Not sure if it changed the distance, though. The exit at Jellico for US25W has always been Exit 160 to my knowledge. At least the overlap with I-40 was truncated.
Quote from: jakeroot on November 17, 2015, 03:30:50 AM
Quote from: Kacie Jane on November 17, 2015, 12:55:49 AM
Quote from: TEG24601 on November 16, 2015, 05:52:36 PM
I don't know if it is official, but I-90 was originally supposed to extend West of I-5 to US/SR(WA) 99, but now stops at 4th Avenue (maybe), and the first exit, at I-5 is labeled at Exit 2.
There is also I-84 in Portland, which while still following its intended route, was modified after the cancelation of the Mt. Hood Freeway, requiring a Mile marker recalibration of a mile or two between what is listed as mile markers West of I-205 and those East of I-205.
I don't think it counts as "truncated" if it was never built.
Speaking of Seattle, did the 405 ever run all the way to the 509 near Burien? Strange question, I know, but I always found it funny that the 405 sort of abruptly ends at the 5 interchange.
You could say the same thing about the north end. But no, as far as I know, 405 has always been I-5 to I-5.
Quote from: Kacie Jane on November 17, 2015, 06:11:25 PM
Quote from: jakeroot on November 17, 2015, 03:30:50 AM
Quote from: Kacie Jane on November 17, 2015, 12:55:49 AM
Quote from: TEG24601 on November 16, 2015, 05:52:36 PM
I don't know if it is official, but I-90 was originally supposed to extend West of I-5 to US/SR(WA) 99, but now stops at 4th Avenue (maybe), and the first exit, at I-5 is labeled at Exit 2.
There is also I-84 in Portland, which while still following its intended route, was modified after the cancelation of the Mt. Hood Freeway, requiring a Mile marker recalibration of a mile or two between what is listed as mile markers West of I-205 and those East of I-205.
I don't think it counts as "truncated" if it was never built.
Speaking of Seattle, did the 405 ever run all the way to the 509 near Burien? Strange question, I know, but I always found it funny that the 405 sort of abruptly ends at the 5 interchange.
You could say the same thing about the north end. But no, as far as I know, 405 has always been I-5 to I-5.
Back when 405 was being planned, the policy was interstates could only end at other interstates, large natural barriers (oceans or great lakes), or national borders.
Speaking of I-84, ours was truncated back from Massachusetts to Manchester, Conn., for some years, with the intention that it would be extended west on a route mostly never built. It was re-extended north, of course, once that plan was abandoned.
Quote from: kkt on November 17, 2015, 09:45:00 PM
Quote from: Kacie Jane on November 17, 2015, 06:11:25 PM
Quote from: jakeroot on November 17, 2015, 03:30:50 AM
Quote from: Kacie Jane on November 17, 2015, 12:55:49 AM
Quote from: TEG24601 on November 16, 2015, 05:52:36 PM
I don't know if it is official, but I-90 was originally supposed to extend West of I-5 to US/SR(WA) 99, but now stops at 4th Avenue (maybe), and the first exit, at I-5 is labeled at Exit 2.
There is also I-84 in Portland, which while still following its intended route, was modified after the cancelation of the Mt. Hood Freeway, requiring a Mile marker recalibration of a mile or two between what is listed as mile markers West of I-205 and those East of I-205.
I don't think it counts as "truncated" if it was never built.
Speaking of Seattle, did the 405 ever run all the way to the 509 near Burien? Strange question, I know, but I always found it funny that the 405 sort of abruptly ends at the 5 interchange.
You could say the same thing about the north end. But no, as far as I know, 405 has always been I-5 to I-5.
Back when 405 was being planned, the policy was interstates could only end at other interstates, large natural barriers (oceans or great lakes), or national borders.
This was my original assumption, but I wasn't 100% sure. Thank you for clarifying.
Until I-90 and I-94 were switched in NE Illinois and NW Indiana, I-294 existed along the Borman Expressway (current I-80/94) concurrent with I-80 and I-90. When I-94 was switched from the Toll Road and Skyway to the Borman and Calumet Expressways with I-90 continuing along the Toll Road and Skyway, I-294 was truncated to the current south end in South Holland.
It seems there are three basic categories here.
1) First, the most common many times over, is that a particular numbered route got cut back, but was replaced by a different Interstate designation due to another route being extended or relocated. I-820 in Fort Worth would be a prominent example.
2) Interstate designation was removed altogether from a still-extant piece of road. The east end of I-70 seems to be this case.
3) The road itself was dismantled or removed. Off hand I think I-480 (CA) is the only example of this–note that I'm not including routes that got shifted a bit because the terminus of a route was reconstructed or relocated, even if the total mileage of that route becomes less as a result. An example of this might be I-195 in Providence.
And then we have some examples thrown in of routes simply being re-routed onto different pieces of road, which are not truncations.
Side question: which syntax is more correct? "Truncated to..." or "truncated at..."?
Quote from: empirestate on November 18, 2015, 11:20:43 AM
3) The road itself was dismantled or removed. Off hand I think I-480 (CA) is the only example of this–note that I'm not including routes that got shifted a bit because the terminus of a route was reconstructed or relocated, even if the total mileage of that route becomes less as a result. An example of this might be I-195 in Providence.
Would Baltimore's I-170 mostly count in this category?
QuoteWould Baltimore's I-170 mostly count in this category?
Only a small part of the western end. Otherwise, I-170 falls under his Category 2.
Quote from: empirestate on November 18, 2015, 11:20:43 AM
3) The road itself was dismantled or removed. Off hand I think I-480 (CA) is the only example of this–note that I'm not including routes that got shifted a bit because the terminus of a route was reconstructed or relocated, even if the total mileage of that route becomes less as a result. An example of this might be I-195 in Providence.
If you want to be super anal, I-480 does not count as a truncation since it was eliminated entirely. To count as a truncation in the most technical sense, a route must still exist, but have at some point in the past continued past one or both of its current endpoints.
Some examples in this thread also seem to fall in a couple of further categories:
4) The road was never finished as originally planned, and was truncated purely on paper. For example, I-78 through New York City.
5) The road was rerouted along a newer highway, with the old highway removed from the interstate system. For example, I-40 in Winston-Salem. Or I-78 in Allentown/Bethlehem.
QuoteSide question: which syntax is more correct? "Truncated to..." or "truncated at..."?
"Truncated to...". Although using "truncated" like this is awkward either way. I would say "cut back" instead if the point of truncation is being named, e.g. "US 15 was cut back to Painted Post", and leave "truncated" only for use without an indirect object, e.g. "US 15 was truncated when I-390 was built".
Quote from: Duke87 on November 18, 2015, 07:27:35 PM
If you want to be super anal, I-480 does not count as a truncation since it was eliminated entirely. To count as a truncation in the most technical sense, a route must still exist, but have at some point in the past continued past one or both of its current endpoints.
I wouldn't call that super anal at all; I'd call it quite apt.
Quote5) The road was rerouted along a newer highway, with the old highway removed from the interstate system. For example, I-40 in Winston-Salem. Or I-78 in Allentown/Bethlehem.
There were a few straight-up relocations mentioned, but I wouldn't count those as any category of truncation.
QuoteQuoteSide question: which syntax is more correct? "Truncated to..." or "truncated at..."?
"Truncated to...". Although using "truncated" like this is awkward either way. I would say "cut back" instead if the point of truncation is being named, e.g. "US 15 was cut back to Painted Post", and leave "truncated" only for use without an indirect object, e.g. "US 15 was truncated when I-390 was built".
I would have chosen "truncated at..." because the sense of the word "truncated" (and the archaic adjective form "truncate") connotes a sudden, squared-off ending (as a limb or appendage) as though by having the end lopped off. So I'd want to say "US 15 was truncated at Painted Post" the same way I'd want to say "Luke's hand was cut off at the wrist", which would leave his arm truncated at the wrist. (But "truncated" doesn't necessarily suggest that anything was actually cut off, only that there is the appearance of this.)