Have interstates been truncated?

[noelbotevera]

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.

[oscar]

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.

[national highway 1]

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.

[Jardine]

Interstate 580 in Omaha NE ??

[Duke87]

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.

[jp the roadgeek]

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. 

[Pete from Boston]

I-495 in New Jersey, but that's not a straightforward case.

[PurdueBill]

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!

[Pete from Boston]

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.

[Henry]

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.

[Mr. Matté]

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.

[PurdueBill]

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.

[hbelkins]

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?

[hbelkins]

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?

[Pete from Boston]

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?

[Revive 755]

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.

[mgk920]

Would I-124 in Tennessee count in here?

Mike

[Scott5114]

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.

[txstateends]

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.

[Henry]

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.

[english si]

I-370 in MD was truncated back from the P&R to the Interconnector when the latter was built.

[hbelkins]

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.

[ekt8750]

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.

[bassoon1986]

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.

[TheStranger]

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)