Interstate H-201 - History

History

The length of H-201 was originally designated as Route 78.

The Federal Highway Administration approved the addition of Interstate H-201 to the Interstate Highway System on November 1, 1989. The Hawai‘i Department of Transportation asked that the Moanalua Freeway be reclassified as an Interstate so that the interchange with H-1 at the eastern end could conform to federal highway standards. The highway was initially designated H-1A, but federal highway policy does not allow alphabetic suffixes in Interstate numbers. The final designation, H-201, conforms to the general rules for three-digit Interstate "loop" routes.

Until 2004, the state Department of Transportation chose not to sign H-201 as such, instead retaining the designation Route 78. Reasons given included the following:

  • inability to render the new route number in a legible manner (it is necessary to use the thinnest font to render the number, as seen above, and the shield is wider than the standard interstate shield)
  • encouraging motorists to use the newer and better designed H-1
  • avoiding confusion with Interstate H-2

In July 2004, in conjunction with a major resurfacing of both sides of the freeway, it was decided to bring the signage in line with the official designation.

Read more about this topic:  Interstate H-201

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