Routes that's basically a long ramp

[DriverDave]

I was going to say I-395 in Florida but looks like it was already mentioned above. I-195 in Florida is essentially the same thing, but longer, basically leading to the Julia Tuttle Bridge from I-95. Although both of these actually have an exit in between the connection points so I don't know if they count as "just a ramp".

[ClassicHasClass]

I-495 Maine

I didn't see this listed, but also ME 703, although it's greatly expanded compared to what it was.

[bing101]

I-980 gets viewed as a ramp for CA-24 and I-880. But It was at one point proposed as part of the "Southern Crossing" proposals along with I-380 and I-238 gets mentioned in the Southern Crossing Proposals.


https://en.wikipedia.org/wiki/Interstate_980

[Sykotyk]

Saw Ohio mentioned, but can't believe I-480N isn't here.

It technically IS labeled, but only on the mile markers.

It connects I-480 EB to US422 EB and I-271 NB/US422 WB and also connects US422 WB to I-480 WB (as well as I-271 SB to I-480 WB).

https://www.google.com/maps/@41.420416,-81.5146785,14.58z?entry=ttu

[thenetwork]

Saw Ohio mentioned, but can't believe I-480N isn't here.

It technically IS labeled, but only on the mile markers.

It connects I-480 EB to US422 EB and I-271 NB/US422 WB and also connects US422 WB to I-480 WB (as well as I-271 SB to I-480 WB).

https://www.google.com/maps/@41.420416,-81.5146785,14.58z?entry=ttu

Way way back when in the 70's, the original plan was to route US-422 along I-480 west to the SR‐14 Broadway exit, where it would've  followed another (never-built) freeway that would likely had linked it directly to the I-77/I-490/E. 55th interchange.

When that plan was nixed, that stretch of "realigned US-422" became "secret I-480N" or "The 480 Spur" as it is referred to in Cleveland traffic reports.

[CNGL-Leudimin]

Saw Ohio mentioned, but can't believe I-480N isn't here.

It technically IS labeled, but only on the mile markers.

It connects I-480 EB to US422 EB and I-271 NB/US422 WB and also connects US422 WB to I-480 WB (as well as I-271 SB to I-480 WB).

https://www.google.com/maps/@41.420416,-81.5146785,14.58z?entry=ttu

Shouldn't be that a loop off I-80N? Which can be easily reconciled, since that part of I-480 was supposed to be I-80N.

[bing101]

https://en.wikipedia.org/wiki/Interstate_705
I-705 is mainly a long ramp in Tacoma.

[CovalenceSTU]

https://en.wikipedia.org/wiki/Interstate_705
I-705 is mainly a long ramp in Tacoma.

The freeway section of WA-7 (opposite of it) as well, it's around 2/3 mile and only goes to 38th St because the rest was never built.

[boilerup25]

Arguably I-579, I-781, and I-790.
I-110 in El Paso
Current alignment of CA 11
VA 233 from US 1 to Washington National Airport.
Cabin John Parkway (not a numbered route, though)

[thenetwork]

I almost want to include I-490 in Cleveland as one long ramp:

EASTBOUND:  The exits for SR-14/Broadway, I-77 North/South and SR-10 East/Opportunity Parkway are all together in succession at I-490's eastern terminus, and....

WESTBOUND: The exits.for W. 7th St., I-90 West, I-71 and SR-176 are also grouped together in short fashion on I-490's western terminus. 

And any traffic entering 490 west from Broadway and 77 -- and 490 East from 90, 71, 176 and W. 7th -- have no choice but to go to the other ends' terminus exits. 

The bulk of I-490 is the bridge over the Cuyahoga River.

[Rothman]

I almost want to include I-490 in Cleveland as one long ramp:

EASTBOUND:  The exits for SR-14/Broadway, I-77 North/South and SR-10 East/Opportunity Parkway are all together in succession at I-490's eastern terminus, and....

WESTBOUND: The exits.for W. 7th St., I-90 West, I-71 and SR-176 are also grouped together in short fashion on I-490's western terminus. 

And any traffic entering 490 west from Broadway and 77 -- and 490 East from 90, 71, 176 and W. 7th -- have no choice but to go to the other ends' terminus exits. 

The bulk of I-490 is the bridge over the Cuyahoga River.

Wut.