Interstate H2

Interstate H2 Hawaii
Pearl City, HI ↔ Wahiawa, HI•8.33 miles•0 Branch Routes

Overview

Interstate H-2 travels northward from Pearl City and Waipahu to Wahiawa and Wheeler Army Airfield. The route primary serves commuting interests between central Oahu and and Honolulu while also providing part of a through route with Route 99 (Kamehameha Highway) to the north shore.

I-H2 starts out paralleling Panakauahi Gulch just east of Waipio. Beyond there, an undeveloped stretch ensues before the freeway curves west across Kipapa Stream through built up areas of Mililani Town and Waipi'o Acres. Crossing a viaduct above Waikakalaua Stream and Waikalani Drive, H2 weaves northward through western reaches of Schofield Barracks to encircle Wheeler AAF. The freeway ends as Wilikina Drive (Route 99) ahead of Kunia Road (Route 750).

Mileage by State

Hawaii8.33 mi

Data Sources

December 31, 2021 Interstate Route Log and Finders List

History

Interstate H-2 was included in the 51.2 miles of freeway added to the Eisenhower Interstate and Defense Highway System in 1960.1 Construction on I-H2 commenced in 1972 and was finished in 1975.

I-H2 - Honolulu, HI
Vintage I-H2 sign. Most button copy signs in Hawaii were replaced by 2010. Photo by Jeff Royston (02/01/06).
Oahu Hawaii - 1973
Replacing Route 99 as the through route between Wahiawa and Pearl City, Interstate H-2 under construction in 1973.

North End Hawaii Route 99 ‐ Wahiawa, HI

Interstate H2 North at Hawaii Route 99

I-H2 north at Route 99 - Oahu

Interstate H-2 ends at the freeway merge with Route 99 (Wilikina Drive) west of Route 80 (Kamehameha Highway). Photo by Oscar Voss (11/01).

South End Interstate H1 ‐ Pearl City, HI

Interstate H2 South at Interstate H1

I-H2 south at I-H1 - Oahu

Southbound Interstate H2 ends at a three wye interchange with I-H1 at Pearl City. Photo by Oscar Voss (11/01).

Interstate H1 East at Interstate H2

I-H1 east at I-H2 - Waipahu, HI

SR 99 (Kamehameha Highway) parallels I-H2 to the west northward to Mililani and Waipio Acres. The two meet directly at the north end of the freeway by Wheeler Army Airfield. 08/15/19

I-H1 east at I-H2 - 2006 I-H1 east at I-H2 - Waipahu, HI I-H1 east at I-H2 - Waipahu, HI I-H1 east at I-H2 - Waipahu, HI I-H1 east at I-H2 - Waipahu, HI

Interstate H1 West at Interstate H2

I-H1 west at I-H2 north at Pearl City, Hawaii

Traffic separates below the Skyline transit line along I-H1 west for I-H2 north to Mililani and Schofield Barracks. I-H1 turns southwest beyond this exchange en route to Waipahu and Barbers Point. 08/15/19

References

  1. Hawaii Department of Transportation. History of Interstate H-3.
Updated July 1, 2026