The Interstate System was expanded to Hawaii in 1960 along several corridors, with H-2 assigned to the north–south connection between theHonolulu area and Wahiawa. Construction began in 1971, and the first section opened to traffic on October 3, 1974. The rest of H-2 was completed on February 21, 1977.
H-2 begins at the Waiawa Interchange withH-1 inPearl City, adjacent toLeeward Community College on the north side ofPearl Harbor. The eight-lane freeway travels north through the residentialWaipio neighborhood and intersects Ka Uka Boulevard near several retailers and warehouses. H-2 then turns northeast and follows the Pānakauahi Gulch as it skirts the foothills of theKoʻolau Range, passing asolar farm and undeveloped land.[2] The freeway turns northwest to cross Kipapa Gulch and bisects a residential neighborhood in the city ofMililani, where it intersects Meheula Parkway. The freeway narrows to four lanes as it approachesWahiawa and turns north to travel aroundWheeler Army Airfield. H-2 terminates after an interchange withRoute 99, which continues west on Wilikina Drive toSchofield Barracks.[3]
The freeway is maintained by theHawaii Department of Transportation (HDOT) and is designated as part of theNational Highway System, a network of economically and militarily strategic highways in the U.S.[4] H-2 has a set ofhigh-occupancy vehicle (HOV) lanes between the Waiawa Interchange and Mililani that are active duringpeak periods on weekdays.[5] Traffic volumes on the highway, measured in terms ofannual average daily traffic, ranged in 2020 from a minimum of 36,900 vehicles at its northern terminus to a maximum of 87,900 vehicles at H-1.[6]TheBus, a city-wide bus system, operates several express routes on H-2 between Downtown Honolulu and Wahiawa.[7]
The freeway would be built parallel to a section of theKamehameha Highway, which opened in 1921 to connect Honolulu to theNorth Shore and the windward side of the island.[10][11] A set of three general routing options were presented at apublic hearing in October 1962, all to be at least four lanes wide except for a section around Wheeler Army Airfield.[12] The easternmost option, with an estimated cost of $29.2 million (equivalent to $231 million in 2024[13]) was chosen by officials following feedback from the hearing.[14] Construction of H-2 was scheduled to begin in 1967, but federal funding cuts deferred several Interstate projects on O‘ahu, including the Waiawa Interchange and Kipapa section of H-2.[15]
Following the partial restoration of federal funding,[16] HDOT opened bids in November 1967 on construction of the Waiawa Interchange with H-1.[17] The remainder of H-2 remained indefinitely deferred, along with funding for H-3.[18] The federal government allocated $51 million (equivalent to $357 million in 2024[13]) for the entire H-2 project in October 1968,[19] allowing for bidding on other construction contracts to open.[20] The original embankment design of crossings for the Kipapa and Waikakalaua streams near Mililani was later replaced in 1971 with bridges to reduce costs and potential erosion issues.[21] H-2 was described as "Hawaii's forgotten freeway" by local newspapers, as its planning was generally uncontroversial compared to other projects, such asH-3, and did not attract the attention of anti-highway activists.[22][23]
Construction on the southernmost section of H-2 began in early 1971 with work on the Waiawa Interchange.[24] By June 1973,grading of the Pearl City–Kipapa section of the freeway was nearly complete and contracts for paving and interchange construction were prepared to be released.[25] The remaining projects for H-2, with the exception of the Kipapa Gulch bridge, were contracted by August and under construction by the end of the year.[26][27] Work on the Waikakalaua Gulch bridge near Mililani began in December 1973,[28] while the Kipapa Gulch bridge began the following year using a cantilevered truss system.[29] Construction on a section of the freeway near Wheeler Army Airfield unearthed the ruins of the Cabrini Chapel, a small church built by Italianprisoners of war housed atSand Island from 1944 to 1945.[30]
The southernmost section of the freeway, traveling two miles (3.2 km) from the Waiawa Interchange with H-1 to the Mililani Cemetery, was completed in early 1974.[23] It was opened to traffic on October 3, 1974, after a temporary road through the cemetery was finished, connecting H-2 to the Kamehameha Highway near the Mililani Town development.[31][32] Part of the freeway's northern terminus at the Wahiawa Interchange opened in October 1975 to allow traffic to bypass a congested left turn on the Kamehameha Highway.[33] The final section of the freeway, including the Kipapa Gulch bridge, opened to traffic on February 21, 1977, after a delay while awaiting delivery of atransformer to control its lights.[34][35] The entirety of H-2 cost an estimated $43 million (equivalent to $173 million in 2024[13]) to construct.[35] The freeway's HOV lanes also opened at the same time, having been added to replace an earlier plan for exclusivebus lanes,[36][37] but were eliminated in January 1979 due to low use.[38]
Construction of the freeway allowed for residential development in theWaipio Valley and around Mililani, which had been designed in conjunction with H-2 in the late 1960s.[35][39] A pair of sites along the highway were also considered in the 1970s for thesecond Oʻahu campus of theUniversity of Hawaiʻi, which was ultimately located atKapolei.[40] A new interchange with Ka Uka Boulevard was opened in July 1989 to serve new development in Waipio.[41] TheMililani Mauka development opened in the 1990s after development closer to the freeway was approved.[42][43] The Meheula Parkway interchange was rebuilt in 1993 to accommodate expected traffic and H-2 was widened to read the HOV lanes, which opened in December 1994.[44][45]
H-2 was designated as the Veterans Memorial Freeway in 2002 by the state government.[46]
^Federal Highway Administration (October 1, 2020).National Highway System: Urban Honolulu, HI(PDF) (Map). Scale not given. Washington, DC: Federal Highway Administration.Archived(PDF) from the original on December 12, 2021. RetrievedNovember 14, 2021.
^"Special Use Lanes". Hawaii Department of Transportation.Archived from the original on November 14, 2021. RetrievedNovember 15, 2021.
^"Route C Favored As Freeway Path".The Honolulu Advertiser. October 10, 1962. p. A2.Archived from the original on November 18, 2021. RetrievedNovember 17, 2021 – via Newspapers.com.
^Lund, Kay (May 11, 1967)."Road plan zips into high".Honolulu Star-Bulletin. p. B4.Archived from the original on November 18, 2021. RetrievedNovember 17, 2021 – via Newspapers.com.
^Lund, Kay (May 16, 1968)."State pressing for H-1 completion".Honolulu Star-Bulletin. p. E8.Archived from the original on November 18, 2021. RetrievedNovember 17, 2021 – via Newspapers.com.
^"One Bidder For Road Project".The Honolulu Advertiser. November 24, 1968. p. E4.Archived from the original on November 18, 2021. RetrievedNovember 17, 2021 – via Newspapers.com.
^Hostetler, Harold (November 29, 1973)."Nobody complains about H-2".The Honolulu Advertiser. p. C2.Archived from the original on November 19, 2021. RetrievedNovember 18, 2021 – via Newspapers.com.
^abSmollar, David (June 16, 1974)."'Forgotten' freeway proceeds smoothly".Honolulu Star-Bulletin. p. A3.Archived from the original on November 19, 2021. RetrievedNovember 18, 2021 – via Newspapers.com.
^"H-2 Hearing Tomorrow".Honolulu Star-Bulletin. April 13, 1971. p. C12.Archived from the original on November 19, 2021. RetrievedNovember 18, 2021 – via Newspapers.com.
^"Freeway work going smoothly".The Honolulu Advertiser. June 26, 1973. p. A10.Archived from the original on November 19, 2021. RetrievedNovember 18, 2021 – via Newspapers.com.
^"Work to begin soon on H-2".The Honolulu Advertiser. October 25, 1973. p. A16.Archived from the original on November 19, 2021. RetrievedNovember 18, 2021 – via Newspapers.com.
^"H-2 Bridge Work to Begin".Honolulu Star-Bulletin. December 18, 1973. p. A21.Archived from the original on November 19, 2021. RetrievedNovember 18, 2021 – via Newspapers.com.
^Nelson, Lyle (September 8, 1976)."WWII Footnote Frozen in Stone".Honolulu Star-Bulletin. p. C5.Archived from the original on November 21, 2021. RetrievedNovember 20, 2021 – via Newspapers.com.
^"Ribbon cutting on H-2".The Honolulu Advertiser. October 4, 1974. p. B6.Archived from the original on November 19, 2021. RetrievedNovember 18, 2021 – via Newspapers.com.
^"H-2 ceremony slated Monday".The Honolulu Advertiser. February 16, 1977. p. A2.Archived from the original on November 15, 2021. RetrievedNovember 15, 2021 – via Newspapers.com.
^"Part of Wahiawa Interchange Open".Honolulu Star-Bulletin. October 3, 1975. p. D16.Archived from the original on November 19, 2021. RetrievedNovember 18, 2021 – via Newspapers.com.
^Imig, Joanne (January 13, 1977)."The Kokua Line".Honolulu Star-Bulletin. p. A3.Archived from the original on November 19, 2021. RetrievedNovember 18, 2021 – via Newspapers.com.
^abc"Long-Awaited H-2 Freeway Opens".Honolulu Star-Bulletin. February 21, 1977. p. 2.Archived from the original on November 15, 2021. RetrievedNovember 15, 2021 – via Newspapers.com.
^Tune, Jerry (July 19, 1973)."State Proposes H-2 Bus Lane".Honolulu Star-Bulletin. p. B4.Archived from the original on November 19, 2021. RetrievedNovember 18, 2021 – via Newspapers.com.
^Cook, Bill (December 17, 1967)."A Town With a Plan".The Honolulu Advertiser. p. D1.Archived from the original on November 19, 2021. RetrievedNovember 18, 2021 – via Newspapers.com.
^Killelea-Almonte, Patti (August 1, 1989)."Waipio Interchange to H-2 opens".The Honolulu Advertiser. p. A3.Archived from the original on November 19, 2021. RetrievedNovember 18, 2021 – via Newspapers.com.
^Morse, Harold (February 20, 1995)."Lane abuse frustrates commuters".Honolulu Star-Bulletin. p. A4.Archived from the original on November 19, 2021. RetrievedNovember 18, 2021 – via Newspapers.com.
^Leidemann, Mike (October 29, 2002)."Governor renames Honolulu freeways".The Honolulu Advertiser. p. B1.Archived from the original on November 15, 2021. RetrievedNovember 15, 2021 – via Newspapers.com.