History notes

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State highway numbers
  • TX: 51
    • Until 1957: 227, FM 1214, (US 67), 51
    • Until 1939: N/A, (US 67), 137, 143, (US 87), 51
  • OK: 134, (US 287)
  • CO: (US 287, US 50), 51, (US 138), 166
  • NE: 27, (US 30), 19
  • SD: 79, US 85A

Except for a bit of the Potash Highway in SD and possibly NE, there were no auto trails along US 385.