
Interstate H-1 (H-1, or I-H1) is a highway in Hawaii.
Route Description[]
Interstate H-1 begins near the Campbell Industrial Park in the town of Kapolei, Hawaii. West of this point, Hawaii State Route 93 (Farrington Highway) continues toward Waianae. The freeway continues east, passing the community of Makakilo until reaching the junction with SR 750 (north to Kunia) and SR 76 (south to Ewa Beach).
H-1 then continues along the northern edge of Waipahu approximately 3 miles (4.8 km) until its junction with Interstate H-2. It then continues east through the towns of Pearl City and Aiea for approximately 5 miles (8.0 km) to the complex Halawa Interchange, where it meets Interstates H-3 and H-201. The highway then turns south for two miles (3 km), then east soon after the exits for Hickam Air Force Base and Pearl Harbor. At this point, the highway runs along a viaduct above State Route 92 (Nimitz Highway), passing to the north of Honolulu International Airport.
Two miles past the airport exit, three lanes exit the freeway at exit 18A to join Nimitz Highway toward Waikiki, while half a mile later the remaining two lanes make a sharp turn south as H-1 reaches another major interchange with the east end of Interstate H-201. Access is provided by a left exit from H-1 east only. H-1 west does not have access to H-201 at this point.
From here H-1 runs through the city of Honolulu along a series of underpasses and viaducts. A flyover interchange leading to downtown Honolulu has a westbound exit and an eastbound entrance. H-1 ends in the Kahala district of Honolulu near Kahala Mall, where State Route 72 (Kalanianaole Highway) ends.
During morning commute hours on weekdays, an eastbound contraflow express lane is deployed from just west of exit 7 to exit 18A, where it connects to the beginning of the Nimitz Highway contraflow lane. The H-1 contraflow lane is often referred to as a "zipper lane" due to the use of a movable concrete barrier and a zipper machine. The H-1 and Nimitz Highway contraflow lanes are restricted to buses, motorcycles, and vehicles with two or more occupants while in operation.
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Signed | 1 • 2 • 3 • 4 • 5 • 7 • 8 • 9 • 10 • 11 • 12 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 • 26 • 27 • 29 • 30 • 35 • 37 • 39 • 40 • 41 • 42 • 43 • 44 • 45 • 47 • 48 • 49 • 50 • 53 • 55 • 57 • 59 • 60 • 64 • 65 • 66 • 68 • 69 • 70 • 71 • 72 • 73 • 74 • 75 • 76 (CO–NE • OH–NJ) • 77 • 78 • 79 • 80 • 81 • 82 • 83 • 84 (OR–UT • PA–MA) • 85 • 86 (ID • PA–NY) • 87 (NC • NY) • 88 (IL • NY) • 89 • 90 • 91 • 92 • 93 • 94 • 95 • 96 • 97 • 98 • 99 • 101 • H-1 • H-2 • H-3 |
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Unsigned | A-1 • A-2 • A-3 • A-4 • PR-1 • PR-2 • PR-3 |
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Lists | Primary • Auxiliary • Intrastate • Suffixed • Business • Future • Former • Hypothetical (Auxiliary • Business) |
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Other | Standards • Intrastate • Temporary • Bypassed • Gaps • Tolled |
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Major Interstates are written in bold. |
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