List of all interstate concurrencies for each 2di with one or more, and the ones that they keep and lose exit number continuity in. If two interstates start at mile 0 at the same point in a state, and both of them continues the mileage after the concurrency instead of resetting to 0 (like I-20/59 AL or I-55/64 MO), it's neither a win nor loss for either interstate.
I-5: Keep 10
I-10: Lose 5, 35
I-15: Keep 80,84,90
I-20: Lose 59 (MS)
I-24: Keep 69. Lose 40, 65
I-26: Lose 240
I-29: Keep 435. lose 35 (mile resets to its own north of concurrency).
I-35: Keep 10, 410, 40, 44, 29. Lose 70 (2A starts at where I-70 enters, so this whole loop can be considered as I-70's exit numbers), 80, 94 (E)
I-39: Lose 90 (IL and WI)
I-40: Keep 55, 65, 24, 75. Lose 35, 85
I-41: Lose 94, 894
I-43: Lose 894, 94
I-44: Keep 49, 55. Lose 35
I-49: Lose 44
I-55: Keep 70, 72, 74. Lose 20, 40, 44, 64 (MO)
I-57: Keep 64, 70
I-59: Keep 20 (MS)
I-64: Keep 55 (MO). Lose 57, 75, 77, 81, 95
I-65: Keep 24, 70. Lose 40
I-69: Lose 37, 55, 24, 465 (future), 96, 94
I-70: Keep 35, 71, 79. Lose 55, 57, 65, 76. Special case: uses I-270's mileage in most of IL.
I-71: Lose 75, 70
I-72: Lose 55
I-73: Keep 74
I-74: Keep 280, Lose 55, 465, 275, 73
I-75: Keep 85, 64, 71. Lose 40
I-76: Keep 77, 70
I-77: Keep 64. Lose 76, 81
I-79: Lose 70
I-80: Keep 580, 35, 94 (IL), 95. Lose 15, 94 (IN), 90 (IN)
I-81: Keep 77, 64, 86
I-83: Lose 695
I-84: Keep 380. Lose 15
I-85: Keep 40. Lose 75
I-86: Lose 81
I-87: Keep 287
I-90: Keep 94 (WI), 39 (WI and IL), 80 (IN). Lose 15, 94 (IL)
I-94: Keep 35E, 43, 41, 90 (IL), 80 (IN), 69. Lose 90 (WI), 80 (IN)
I-95: Keep 64, 495 (VA). Lose 80
I-96: Keep 69