Closest interstate non-clinches

[sipes23]

I have the entirety of Maine's interstate system clinched... except for the less than a mile section of I-195 east of US 1 in Saco.

As a former resident of Saco, I can tell you that unless you're going from the Turnpike to OOB that section is (and maybe not even then!) hard to catch. I've been down the road that parallels that section of I-195 many, many, many times. That section of I-195? Once.

On a side note, I feel your pain. I'm missing the portion of I-395 east of I-95 in Bangor. Worse: I'm moving to Wyoming in a few weeks and will thus be even further from an excuse to clinch it.

[golden eagle]

As far as clinching whole interstates, I'm missing I-55 from I-80 northward. I'm also missing I-59 from the Argo exit in Alabama northward, I-65 from the I-71 interchange at Louisville northward, and I-20 from the first South Carolina exit eastward.

[mvak36]

I-78 from Marin Blvd in Jersey City east into NY.
1 mile left on I-280 in NJ
0.5 mile left om I-190 IL
1.5 mile left on I-630 AR

[doorknob60]

For I-5, not super close, but I have everything from the BC border to somewhere around Laguna Niguel, CA. I have been on a few miles of I-5 in San Diego (maybe from around Torrey Pines to CA-163 in downtown). The only time I've been to San Diego was flying, not driving.

[TheHighwayMan3561]

2di: Two sections of I-94, one from I-90 to MT 47 and the other from US 12 near Ypsilanti to Port Huron.

3di: I-190 in IL between Mannheim Rd and the airport.

[noelbotevera]

Forgot here: I-287 south of exit 3. I planned the map to drive this stretch by using I-78 to I-287 to NJ 440 for our upcoming Atlantic City road trip, but instead opted for PA Turnpike to NJ Turnpike and take NJ 440 that way.