
| I-64 | I-65 | I-69 | I-70 | I-74 | I-80 | I-90 | I-94 | I-164 | I-165 * | I-265 | I-275 | I-294 * | I-465 | I-469 | I-865 |
| US 6 | US 12 | US 20 | US 24 | US 27 | US 30 | US 31 | US 33 | US 35 | US 36 | US 40 | US 41 | US 50 |
| US 52 | US 112* | US 131 | US 136 | US 150 | US 152* | US 224 | US 231 | US 421 | US 460* | US 641* |
| Between 1918 and 1926, another state road numbering scheme was in place. When some US highways came into being in Indiana in 1926, the numbering scheme had changed to the current system. The old system, like the current system, had discontiguous sections of the same route. | |||||||||
| Old SR 1 | Old SR 2 | Old SR 3 | Old SR 4 | Old SR 5 | Old SR 6 | Old SR 7 | Old SR 8 | Old SR 9 | |
| Old SR 10 | Old SR 11 | Old SR 12 | Old SR 13 | Old SR 14 | Old SR 15 | Old SR 16 | Old SR 17 | Old SR 18 | |
| Old SR 19 | Old SR 20 | Old SR 21 | Old SR 22 | Old SR 23 | Old SR 24 | Old SR 25 | Old SR 26 | Old SR 27 | |
| Old SR 28 | Old SR 29 | Old SR 30 | Old SR 31 | Old SR 32 | Old SR 33 | Old SR 34 | Old SR 35 | Old SR 36 | |
| Old SR 37 | Old SR 38 | Old SR 39 | Old SR 40 | Old SR 41 | Old SR 42 | Old SR 43 | Old SR 44 | Old SR 45 | |
| Old SR 46 | Old SR 47 | Old SR 48 | Old SR 49 | Old SR 50 | Old SR 51 | Old SR 53 | Old SR 54 | Old SR 55 | |