Decommissioned routes you have clinched

[kkt]

California I-480 (as much as was ever built) and CA 480

[Bickendan]

OR 212 west of I-205
OR 213 along Airport Way

[cl94]

Let's see (not counting routes that were renumbered)...

Massachusetts:
Business Spur I-495 (Lowell Connector)

New York:
-All rerouted sections of US 9, US 9W, US 20, US 44, US 219
-The original surface alignment of NY 17
-The original surface alignment of NY 27
-NY 25C
-NY 31B
-NY 32B
-The former middle section of NY 42
-NY 57
-NY 82A
-Former NY 115 on Long Island (Wantagh Avenue)
-NY 146B
-NY 152
-NY 153
-NY 154
-Former NY 215 in Hamlin, Monroe County
-NY 239
-NY 255
-NY 258 (was once much longer)
-NY 267
-NY 273
-NY 288
-NY 317
-NY 323
-NY 338 (both of them)
-NY 339
-NY 356
-NY 358
-NY 361
-NY 380
-NY 405
-NY 422

There are likely more in other states. I plan to get a large amount of truncated US 21 this weekend, for example.

[webny99]

^ NY 153? 
Is there another former one, or was the existing one truncated?

[cl94]

^ NY 153? 
Is there another former one, or was the existing one truncated?

There are two former ones. The one in question is near the Vermont line. Becomes VT 153.

[Max Rockatansky]

In kind of a weird way CA 276.  The route only existed on legislative paperwork but I've driven all of the adopted routing from Three Rivers to Mineral King.

[formulanone]

I can also include Georgia State Route 381; it turns out that Google Maps has many of the state's decommissioned routes still posted.