Kamehameha Highway is one of the main highways serving suburban and rural OâÂÂahu in the U.S. state of HawaiâÂÂi. Informally known as Kam Highway, it begins at Nimitz Highway near Pearl Harbor and Hickam Air Force Base in Honolulu, serves the island's older western suburbs, and turns north across the OâÂÂahu Central Valley to the North Shore. At the North Shore, Kamehameha Highway heads northeast around the northern tip of OâÂÂahu, then southeast to and just beyond KÃÂneâÂÂohe Bay on the windward coast. The road was named after King Kamehameha I.
A short detached segment of the Kamehameha Highway exists for a few blocks in the Honolulu neighborhood of Kalihi. This segment runs as a short extension of Dillingham Boulevard from PuâÂÂuhale Road (near the OâÂÂahu Community Correctional Center) to exit 18B on Interstate H-1. This section was contiguous with the rest of the highway before the construction of the H-1 viaduct.
As Route 99, Kamehameha Highway begins at its southern terminus at the Pearl Harbor interchange of Interstate H-1 near Pearl Harbor and Hickam Air Force Base. The highway runs north past the Pearl Harbor historic sites such as the USS Arizona Memorial and the , the Admiral Clarey Bridge to Ford Island leading to the , and Aloha Stadium. The highway then turns west through the suburbs of âÂÂAiea and Pearl City, passing Pearlridge Center, the state's second largest shopping mall.
After passing Pearl City and the interchange with Interstate H-2 near Waipahu, Route 99 turns north through the central OâÂÂahu suburbs of WaipiâÂÂo and Mililani. South of Wahiawànear Wheeler Army Airfield, the named Kamehameha Highway continues through Wahiawàas Route 80, while Route 99 (as Wilikina Drive and Kamananui Road) bypasses Wahiawàon the west, rejoining Kamehameha Highway north of Whitmore Village. It then continues north through pineapple fields and former sugar cane fields to the junction with Route 83 near HaleâÂÂiwa.
As Route 80, Kamehameha Highway begins at the interchange with Interstate H-2 and Route 99 and passes through central WahiawÃÂ and passing Whitmore Village before rejoining Route 99 north of WahiawÃÂ.
Originally, Kamehameha Highway continued as Route 83 at the junction with Route 99 at Weed Junction in HaleâÂÂiwa, passing through HaleâÂÂiwa up the North Shore. Since 1995, Route 83 begins inland from Weed Junction as the Joseph P. Leong Highway and bypasses HaleâÂÂiwa town on the inland side, rejoining Kamehameha Highway north of HaleâÂÂiwa.
From HaleâÂÂiwa, Kamehameha Highway passes Waimea Bay, Sunset Beach, and the Turtle Bay Resort at the northern tip of OâÂÂahu before heading down the Windward Coast communities of LÃÂâÂÂie, HauâÂÂula, PunaluâÂÂu, and KaâÂÂaâÂÂawa.
At KahaluâÂÂu, Kamehameha Highway follows the coastline through HeâÂÂeia and the main commercial district of KÃÂneâÂÂohe (this segment was formerly Route 836), while Route 83 continues as Kahekili Highway bypassing KÃÂneâÂÂohe town to the west before reaching the junction with Likelike Highway (Route 63). Route 83 rejoins Kamehameha Highway in KÃÂneâÂÂohe and continues south to the interchange with Interstate H-3 and the eastern terminus at Route 61.
Hawaii Route 830 is a north–south route on the island of OâÂÂahu, HawaiâÂÂi. Its northern terminus is with Route 83, near KahaluâÂÂu. It then continues southward along the shore of the KÃÂneâÂÂohe Bay, until its southern terminus with Routes 63 and 83, only 1.5 miles away from Interstate H-3.