What interstate have you clinched the most times?

[pianocello]

I-88 in Illinois. I haven't lived in a position that would make sense for me to clinch any 3dis more than a couple times, and I haven't clinched too many more 2dis.

[sparker]

Hazarding a few guesses:
3di's:  I-680 (CA), I-205 (CA), I-280 (CA), I-880 (CA), I-780 (CA), I-205 (OR/WA).  Have clinched most of I-580 several times, but the section between I-205 & I-5 only sporadically.  When I was working down in L.A. area, the Interstates clinched regularly were I-210, I-605, I-215, and I-105; the other regional 3di's were clinched occasionally but not regularly. 
2di's:  Clinched several times: I-5, I-8.  Clinched a few times: I-82, I-84 (W).  Pretty much all other clinches have been once or twice.

[US71]

540 in Arkansas, 49 in Arkansas

[MantyMadTown]

I-43 from Green Bay to Milwaukee. I've been on it more times than I can count, and I regularly use a small part of it when I drive between my hometown and Madison. I'm not counting the segment from Milwaukee to Beloit because I've never taken that route.

[hotdogPi]

I-43 from Green Bay to Milwaukee. I've been on it more times than I can count, and I regularly use a small part of it when I drive between my hometown and Madison. I'm not counting the segment from Milwaukee to Beloit because I've never taken that route.

Clinch means drive the entire length (it doesn't have to be in a single trip). If you have never been on a particular section, you haven't clinched it.

[yakra]

ME I-295, too many times to count, though never in one sitting.
Distant second would be ME I-195 or MA I-290. Not quite sure which of these would eke out the other.
I haven't clinched any 2DIs multiple times.

[ilpt4u]

I think the only 2DIs I've clinched are I-57 (current route from Chicago to Sikeston - not the Future I-57 in Arkansas) and I-24, and neither lots of times...Unless we want to count the Western/IL I-88, which I have clenched countless times

3DIs...

IN: I-465

IL: I-155, I-190, I-290, I-294, I-355. Most on that list would be 355, followed by 294

[froggie]

I-43 from Green Bay to Milwaukee. I've been on it more times than I can count, and I regularly use a small part of it when I drive between my hometown and Madison. I'm not counting the segment from Milwaukee to Beloit because I've never taken that route.

Clinch means drive the entire length (it doesn't have to be in a single trip). If you have never been on a particular section, you haven't clinched it.

Given that others have mentioned state segment clinches, this one is not as off as you're attempting to put it.  Nevermind that, at one point, Green Bay to Milwaukee *WAS* the entire length of I-43.

[oscar]

Probably I-695 in D.C., or I-270 Spur in Maryland (not the mainline, since it's pretty rare for me to drive the other branch of I-270 between the spur and I-495).

I-395 in Virginia/D.C. was part of my daily commute when I was working, but only from VA 27 to D St. NW in D.C. -- segments where I am weak are in D.C. between D St. and New York Avenue, and in Virginia VA 120 to VA 27.

[davewiecking]

MD-s I-495X: thousands of times; MD's I-270Y and I-595: hundreds of times (yes, I'm really stretching this); MD's I-370: somewhere in the double digits; DC's I-695, DC/VA's I-395, MD's I-270 and I-895, MD/DC I-295: several.

I-83 probably a few times more than I-97, but both in the single digits. All other 2 DI's: 0.

[TheStranger]

Interstate 380 in San Bruno:

- connecting between portions of South San Francisco can sometimes be much faster taking 380 instead of staying on surface streets in town
- Heading south from SF to San Jose, it's quicker to get to San Bruno via the Bayshore Freeway rather than 280's routing along the Southern Freeway in San Francisco's Oceanview neighborhood, then from there I can switch over via 380 to the Junipero Serra Freeway portion of 280 bypassing downtown San Mateo and downtown Redwood City.
- on some occasions going to and from Sharks games from SF, I end up clinching the route in both directions (say, 380 west on the southbound portion of the trip, 380 east on the northbound half) in the same outing

[signalman]

In NJ/NY it would have to be I-287.  Interestingly, while I've clinched this road many times, I don't think I've ever done it in one sitting.  For NJ/DE it's definitely I-295, that one I don't think I've ever not clinched in one sitting.  For DE alone it would be I-495 (I'm not about to split hairs as to whether it enters PA.  As far as I'm concerned, it's a DE route).  For PA it would have to be I-380, I-180, and I-283.  I don't think I've clinched any 2di multiple times, only segments of them.

[NWI_Irish96]

Only interstates I've clinched more than twice are I-265, I-465 and I-865 in Indiana, I-190, I-290 and I-294 in Illinois, I-264 and I-265 in Kentucky, with I-265 in Indiana being by far the one I've clinched the most times.

Only 2di that I've clinched more than once is I-88(IL).

[ClevePVU]

I-12
too many trips from Houston to the east coast

I-45
because, Dallas...

[Beltway]

VA I-195 in Richmond.  Use end to end several times a week, have done that for many years.

Mainline Interstate routes, hard to say.  Probably I-66, handful of times total.

[SP Cook]

I-68, by far.  Probably well over 100 times.  No others in double digits. 

3DI would be I-270 into DC.  Probably 20 times. 

[pdx-wanderer]

Oregon's I-405. I can't even imagine what second place would be.

[DJ Particle]

I-394 in MN.  Not like it's hard to do, it's under 10 miles long!   

[froggie]

^ All the way to/from Washington Ave?

[DJ Particle]

The road to Washington Ave is part of Exit 9C.  I-394 ends at 3rd/4th Streets.

Either way, clinched numerous times.   

[TheHighwayMan3561]

Here we go again with the I-394 east end discussion! 

[michravera]

I think many of us have clinched the same interstate multiple times in our driving careers.  So what interstate do you think you've clinched the most?  We can throw mainline and 3di answers up in here.   I reckon that means there are probably a few of you who clinch an interstate twice every weekday.

For me, it's I-39.  I'm probably up to at least a dozen clinches of this one since I first checked it off in 2003.  I did it once again in the last month.
For a 3di clinch, it's gotta be I-894, though I-535 is up there too.

I clinch I-380 and I-205 in California just about every time that I drive on them. I also do the same to I-505 but drive it less frequently. I probably clinched I-205 at least 150 times per year between 1991 (when I moved to the Bay Area from Sacramento) and 1997 (when my then fiance'e did).

[ce929wax]

I have probably clinched I-196 somewhere between 10 and 100 times, but I also live in West Michigan.

I have clinched I-12 at least twice, possibly three times.

[froggie]

The road to Washington Ave is part of Exit 9C.  I-394 ends at 3rd/4th Streets.

Either way, clinched numerous times.   

That's what MnDOT wants you to think.  But per their Logpoint (and shapefiles), Washington Ave is the actual terminus.

Here we go again with the I-394 east end discussion!

😌

[Super Mateo]

For me, it's probably I-865, as Indianapolis always seems to be in the way of where I want to go east of there.

Locally, it's I-294, but I have completed the western I-88.  I've also been at probably 5 of the endpoints of I-74, but need to fill in a bunch of miles in between.