(abbreviated '''H-1''' or '''I-H-1''') is an
Interstate Highway in
Hawai‘i ,
United States , on the island of
O‘ahu . Despite the number, this is an east-west highway—the 'H'-series (for Hawai'i) numbering reflects the order in which routes were funded and built. H-1 goes from
Makakilo at Hawai‘i State Rte. 93 (Farrington Highway) to
Kāhala at State Rte. 72 (Kalaniana‘ole Highway).
East of Middle Street in
Honolulu (exit 19A), H-1 is also known as the and is sometimes signed as such at older signs in central Honolulu. West of Middle Street, H-1 is also known as the '''Queen Liliuokalani Freeway'''; this name is shown on some roadmaps.
Bolded cities are officially-designated
Control Cities for signs.
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- A portion of the is designated as Interstate H-201 . Until mid-2004, it was signed as Hawaii State Route 78.
This was the first freeway of any kind built in the Hawaiian Islands. The portion of H-1 that runs through downtown Honolulu opened in
1953 as the ; it was added to the Interstate system when Hawai‘i became a state.
