Roads removed from interstate system.

[Roadgeekteen]

Only one I can think of is the Northeast Expressway in Boston.

[Max Rockatansky]

On what basis though?  I'm usually not a fan of removing highways just for the sake of it, even if the traffic count is fairly nominal. 

[csw]

Once the bridges get old enough, I-229 through St. Joseph, MO, will likely be deleted.

[StogieGuy7]

Only one I can think of is the Northeast Expressway in Boston.

Yes, because they finally gave up on the idea of punching I-95 through near north shore toward Peabody and punted by diplexing it with your avatar (128).  And now that you mention it, I can't think of any others myself though I am sure there must be other examples.

[TheHighwayMan3561]

I-895 NY
I-580 NE

[Mapmikey]

I-78 JFK airport
I-40 inside Memphis beltway
I-84 Willimatic CT
I-40 through central Winston-Salem
I-40 through Greensboro (later restored)
I-85 through Spartanburg SC
I-85 in central Atlanta (now GA 13)
I-40 in downtown OKC

Soon we can add
I-74 inside Winston-Salem beltway se of town

[SectorZ]

Can we add Business Loop/Spur Interstates to this?

[jmacswimmer]

-I-170 in Baltimore
-I-78 Lehigh Valley Thruway (and by extension, I-378)

[Flint1979]

I-375 in Michigan will most likely be deleted once MDOT can actually come up with an alternative.

[Scott5114]

I-480 San Francisco

[kendancy66]

Would TEMP 85 count as formerly being in the interstate system? It ran from south of Greensboro, approximately at the Bus 85/US-29/US-70 exit to I-85 south of Lexington where US-29/US-70/US-52 rejoin I-85 again. 

[Crown Victoria]

Florida's Turnpike from Palm Beach Gardens to Fort Pierce was for a time also the route for I-95.

[sprjus4]

I-40 through Greensboro (later restored)

Also I-85 through Greensboro.

If I-40 was ever signed along Wade Ave in Raleigh in the 1970s, then that would also count.

[tigerwings]

I-80 thru Sacramento. Was rerouted over the original I-880.  Former route is US-50 and BUS 80 and unsigned I-305 and CA 51

[oscar]

Part of I-295 in Washington D.C., converted to non-freeway Southeast Boulevard (another I-295 segment was renumbered to I-695).

Proposed new alignment of I-80 in Sacramento was abandoned, but I'm unsure whether the closed segment (I think now used as a light-rail corridor) was ever opened to traffic or designated as part of I-80.

[sprjus4]

Not sure if it would count for the purposes of this thread, but I-395 between I-95 / I-495 and DC was originally I-95 until the remainder was canceled and was re-routed along the Beltway in the 1970s.

[Road Hog]

Until the present route of I-20 was finished west of Fort Worth, it ran along what is now US 287 to downtown Fort Worth and continued west on what is now I-30. I-30 terminated downtown. So I guess that section of US 287 counts.

Obviously that changed the mileage of I-30 and I imagine all the mileposts and exit numbers had to be changed, but that was way before my time.

[Mapmikey]

Not sure if it would count for the purposes of this thread, but I-395 between I-95 / I-495 and DC was originally I-95 until the remainder was canceled and was re-routed along the Beltway in the 1970s.

I've been interpreting this thread as a still existing road was removed from the interstate system so renumberings to other interstate designations wouldn't count nor would say completely abandoned sections of the Pennsylvania Turnpike.

There is also I-70 just East of I-695.

I-540 west of I-40 was signed then changed to NC 540 but I have to check if it was actually put into the interstate system. I-295 Fayetteville also did this but is going to be fully restored.

If segments under construction but forever abandoned count then there is I-266 Three Sisters Bridge

[DTComposer]

I-80 thru Sacramento. Was rerouted over the original I-880.  Former route is US-50 and BUS 80 and unsigned I-305 and CA 51

But the unsigned I-305 is still in the Interstate System. Only the CA-51 section was actually removed from the system.

Along a similar vein is the northernmost section of the Orange Freeway (between I-10 and I-210/former CA-30). It was I-210, but once CA-210 was completed out to San Bernardino, it was renumbered as the northern end of CA-57. BUT as far as the Interstate System is concerned, it is still part of I-210.

Other sections removed in California, all in 1965:

-I-80 between the west end of the Bay Bridge and US-101 (basically the portion in the city of San Francisco)

-I(CA)-10 between US-101 and I-5 (the San Bernardino Split) - was I-110
-US-101 between I(CA)-10 and I-5 (from the SB Split to the East LA Interchange) - was I-105
**There's a good thread covering some of this here:
https://www.aaroads.com/forum/index.php?topic=27406.0

[Bruce]

A whole lot of Temp Routes.

Temp I-90 in Seattle once used Dearborn Street and Rainier Avenue, the latter of which has also been removed from the state highway system with the truncation of WA 167/900.

[Mapmikey]

Would TEMP 85 count as formerly being in the interstate system? It ran from south of Greensboro, approximately at the Bus 85/US-29/US-70 exit to I-85 south of Lexington where US-29/US-70/US-52 rejoin I-85 again. 

I found no evidence I-85 TEMP was officially in the interstate system.  There is no AASHTO item removing it when I-85 was completed in 1984.  Online availability of AASHTO minutes stops at 1967 so it is possible 85 TEMP was in the system in the 1950s (I-85's actual routing was known way back then).

I-540 west of I-40 was signed then changed to NC 540 but I have to check if it was actually put into the interstate system.

I-540 FUTURE was approved by AASHTO in 2006 for the portion that was renumbered as NC 540


Now for one that will bring the tomato throwing...

GA 520 was officially placed into the interstate system from US 17 to Jekyll Island for 1 day as I-50.  That one day was May 7, 2006.  Why there?  That's where the AASHTO US Route Numbering Committee was meeting and they were doing a vintage car ride to celebrate the 50th anniversary of the Interstates...

http://web.archive.org/web/20170202154531/https://route.transportation.org/Documents/USRN_Minutes_5-5-06.pdf

A whole lot of Temp Routes

Don't know about the early decades of the system where those were prevalent (i.e. were they really in the interstate system) but these days TEMP designations require AASHTO approval.  Since 1967 only two have appeared on the minutes: I-77 TEMP in Columbia SC was approved; I-74 TEMP in Winston-Salem NC was not.

[thspfc]

Is the I-515 designation going to be removed in Vegas? It's pointless now that I-11 is on that road as well. Obviously that's not relevant to the question here, but still.

[Max Rockatansky]

I-510 and I-410 were removed from the Phoenix Area.  I-410 would become mainline I-10 and I-510 became AZ 51.

[oscar]

Is the I-515 designation going to be removed in Vegas? It's pointless now that I-11 is on that road as well. Obviously that's not relevant to the question here, but still.

NVDOT hasn't committed to routing I-11 on what's now I-515, which is still signed only as I-515/US 93/US 95, with no mention of I-11. Other options for extending I-11 through the Las Vegas area are in play in the ongoing environmental review process, though it would not surprise me if I-515 disappears sometime this decade.

There's a very long thread on this issue.

[michravera]

I-480 San Francisco

I-80 ended up following the former I-880 and I-305 was substituted for part of it (from the former I-880, now I-80 "Stay Right to Stay On" to what is now CASR-51). After a 90 degree turn advise to 35 MPH, what is now CASR-51 (and signed as "Business 80") was removed from the Interstate system.