Interstate H-1
86029
225524367
2008-07-14T03:43:42Z
75.47.152.237
/* Auxiliary routes */
{{Infobox Interstate/Intrastate
|state=HI
|article_route=H1
|type=Main
|map=Interstate H1 map.png
|maint=
|length_mi=27.16
|length_round=2
|length_ref=<ref>[http://www.fhwa.dot.gov/reports/routefinder/table1.htm Route Log - Main Routes of the Eisenhower National System Of Interstate and Defense Highways - Table 1]</ref>
|year_established=1953-1959
|direction_a=West
|terminus_a={{Jct|state=HI|Route|93}} in [[Kapolei, Hawaii|Kapolei]]
|junction={{Jct|state=HI|I|2}} in [[Pearl City, Hawaii|Pearl City]]<br>{{Jct|state=HI|I|201}} in [[Aiea, Hawaii|Aiea]]<br>{{Jct|state=HI|I|3}} in [[Halawa, Hawaii|Halawa]]
|direction_b=East
|terminus_b= {{Jct|state=HI|Route|72}} in [[Honolulu, Hawaii|Honolulu, HI]]
|previous_type=
|previous_route=
|next_type=
|next_route=
}}
'''Interstate H-1''' (abbreviated '''H-1''') is the busiest [[interstate highway]] in [[Hawaii]], [[United States]], located on the island of [[Oahu|O‘ahu]]. Despite the number, this is an east-west highway—the 'H'-series (for Hawaii) numbering reflects the order in which routes were funded and built. H-1 goes from [[Hawaii Route 93|Route 93]] (Farrington Highway) in [[Kapolei, Hawaii|Kapolei]] to [[Hawaii Route 72|Route 72]] (Kalanianaole Highway) in [[Honolulu, Hawaii|Kāhala]]. East of Middle Street in [[Honolulu]] (exit 19A), H-1 is also known as the '''[[Lunalilo]] Freeway''' and is sometimes signed as such at older signs in central Honolulu. West of Middle Street, H-1 is also known as the '''[[Liliʻuokalani|Queen Liliʻuokalani]] Freeway'''; this name is shown on some roadmaps. It is the westernmost interstate highway in the United States.
==Route description==
[[Image:H1 freeway lapse.jpg|thumb|left|Time-lapse image of H-1 near Ward Avenue.]]
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, Hawaii|Waianae]]. The freeway continues east, passing the community of [[Makakilo, Hawaii|Makakilo]] until reaching the junction with SR 750 (north to Kunia) and SR 76 (south to [[Ewa Beach, Hawaii|Ewa Beach]]).<ref name=maps>[[Google Maps]] street maps and [[USGS]] [[topographic map]]s, accessed December 2007 via [http://mapper.acme.com/ ACME Mapper]</ref>
H-1 then continues along the northern edge of [[Waipahu, Hawaii|Waipahu]] approximately 3 miles until its junction with [[Interstate H-2]]. It then continues east through the towns of [[Pearl City, Hawaii|Pearl City]] and [[Aiea, Hawaii|Aiea]] for approximately 5 miles to the complex Halawa Interchange, where it meets Interstates [[Interstate H-3|H-3]] and [[Interstate H-201|H-201]]. The highway then turns south for two miles, 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]].<ref name=maps>[[Google Maps]] street maps and [[USGS]] [[topographic map]]s, accessed December 2007 via [http://mapper.acme.com/ ACME Mapper]</ref>
{| class="infobox" width="230px"
!style="background: #ccf;"|<big>Major cities</big><br><small>'''Bolded cities''' are officially-designated [[control city|control cities]] for signs</small>
|-
|
*'''[[Waianae, Hawaii|Waianae]]''' (via [[Route 93 (Hawaii)|Route 93]])
*'''[[Honolulu, Hawaii|Honolulu]]'''
|}
[[Image:Interstate H-1.jpg|thumb|left|H-1 eastbound into Honolulu.]]
Two miles past the airport exit, three lanes exit the freeway at exit 18A to join Nimitz Highway toward Waikiki, while the remaining two lanes make an S-curve to join the east end of [[Interstate H-201]]. From here H-1 runs through the city of Honolulu along a series of underpasses and viaducts. H-1 ends in the Kahala district of Honolulu near Kahala Mall, where state route 72 (Kalanianaole Highway) ends.
[[Image:Honolulu09.JPG|thumb|Aerial view of H-1 (looking east) from Honolulu Airport heading into downtown Honolulu.]]
H-1 has a maximum posted speed limit of 60 mph (100 km/h) west of the Kunia-Ewa-Waipahu interchange; a 55 mph (90 km/h) speed limit for the remaining section running to the airport, and a 50 mph (80 km/h) speed limit on the Lunalilo freeway section that runs within the Honolulu area, with a few 45 mph (73 km/h) sections.
==History==
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 '''Mauka Arterial'''; it was added to the Interstate system when Hawaii became a state. This section has been largely unchanged since its inception and its design suffers from having too many on/off ramps, short distanced on-ramps, and on-ramps that enter the freeway almost immediately before an off-ramp (opposite of current design standards). The 'new' section of H-1 was, however, built to modern freeway standards.
==Exit list==
{| class=wikitable
!County
!Location
!Mile<ref name=Delorme>{{cite map|title=Street Atlas USA|publisher=[[Delorme]]|year=2007|edition=Toggle Measure Tool|accessdate=2007-06-03}}</ref>
![[Exit number|#]]
!Destinations
!Notes
|-
|rowspan=49|[[Honolulu County, Hawaii|Honolulu]]
|rowspan=4|[[Kapolei, Hawaii|Kapolei]]
|0.00
|
|{{jct|state=HI|Route|93|dir1=west|name1=[[Farrington Highway]]}}
|Westbound exit and eastbound entrance; west end of H-1
|-
|1.12
|1A
|[[Campbell Industrial Park]], [[Barbers Point Harbor]] ([[Route 95 (Hawaii)|Route 95]])
|Signed as exit 1 westbound
|-
|1.18
|1B
|[[Makakilo, Hawaii|Makakilo]], [[Kapolei, Hawaii|Kapolei]], [[Kalaeloa, Hawaii|Kalaeloa]]
|Eastbound exit and westbound entrance
|-
|2.21
|2
|[[Makakilo, Hawaii|Makakilo]], [[Kapolei, Hawaii|Kapolei]], [[Kalaeloa, Hawaii|Kalaeloa]] ([[Route 901 (Hawaii)|Route 901]])
|Westbound exit and eastbound entrance
|-
|rowspan=5|[[Waipahu, Hawaii|Waipahu]]
|6.49
|5
|{{jct|state=HI|Route|76|dir1=south|Route|750|dir2=north|city1=Kunia|city2=Waipahu|city3=Ewa}}
|Signed as exits 5A (south) and 5B (north) westbound
|-
|8.20
|7
|[[Waikele, Hawaii|Waikele]], [[Waipahu, Hawaii|Waipahu]]
|
|-
|9.40
|8
|{{jct|state=HI|Route|99|dir1=north|name1=[[Kamehameha Highway]]|city1=Waipahu|city2=Pearl City}}
|Eastbound exit and westbound entrance; signed as exits 8A (south) and 8C (north)
|-
|9.74
|8B
|{{jct|state=HI|I|2|dir1=north|city1=Mililani|city2=Wahiawa}}
|Signed as exit 8A westbound
|-
|
|8B
|[[Waipahu, Hawaii|Waipahu]] ([[Route 7101 (Hawaii)|Route 7101]])
|Westbound exit and eastbound entrance
|-
|[[Pearl City, Hawaii|Pearl City]]
|11.62
|10
|[[Pearlridge, Hawaii|Pearlridge]], [[Pearl City, Hawaii|Pearl City]], [[Waimalu, Hawaii|Waimalu]]
|
|-
|rowspan=3|[[Halawa, Hawaii|Halawa]]
|14.20
|13A
|{{jct|state=HI|Route|78|dir1=west|city1=Aiea|city2=Pearlridge}}
|
|-
|14.61
|13B
|{{jct|state=HI|I|3|dir1=east|I|201|dir2=east|city1=Kaneohe|city2=Honolulu}}
|Signed as 13A eastbound
|-
|
|13B
|[[Halawa Heights, Hawaii|Halawa Heights]], [[Aloha Stadium]] ([[Route 7241 (Hawaii)|Route 7241]])
|Eastbound exit and westbound entrance
|-
|rowspan=30|[[Honolulu, Hawaii|Honolulu]]
|16.65
|15A
|{{jct|state=HI|Route|99|dir1=west|city1=Arizona Memorial}}, [[Aloha Stadium]]
|Westbound exit and eastbound entrance
|-
|16.85
|15B
|{{jct|state=HI|Route|92|dir1=west|city1=Hickam AFB|city2=Pearl Harbor}}
|Signed as 15 eastbound
|-
|16.06
|15
|{{jct|state=HI|Route|92|dir1=east|name1=[[Nimitz Highway]]}}
|Eastbound exit and westbound entrance
|-
|17.77
|16
|[[Honolulu International Airport]]
|
|-
|19.60
|18
|{{jct|state=HI|Route|92|dir1=west|name1=[[Nimitz Highway]]}}
|Westbound exit and eastbound entrance
|-
|19.12
|18A
|{{jct|state=HI|Route|92|dir1=east|name1=[[Nimitz Highway]]|city1=Waikiki}}
|Eastbound exit and westbound entrance
|-
|19.34
|18B
|Middle Street, Dillingham Boulevard ([[Route 7415 (Hawaii)|Route 7415]])
|Eastbound exit and westbound entrance
|-
|20.36
|19A
|Middle Street ([[Route 7415 (Hawaii)|Route 7415]])
|Westbound exit only
|-
|20.36
|19B
|{{jct|state=HI|I|201|dir1=west|city1=Fort Shafter|city2=Aiea}}
|Westbound exit and eastbound entrance
|-
|20.56
|20A
|{{jct|state=HI|Route|63|dir1=north|name1=[[Likelike Highway]]}}
|
|-
|
|20B
|Houghtailing Street
|Westbound exit only
|-
|20.80
|20B
|{{jct|state=HI|Route|98|dir1=east|name1=Vineyard Boulevard}}
|Eastbound exit and westbound entrance
|-
|21.35
|20C
|Palama Street
|Westbound exit only
|-
|
|21A
|School Street
|Westbound exit and eastbound entrance
|-
|22.31
|21A
|{{jct|state=HI|Route|61|name1=[[Pali Highway]]}}
|Signed as exit 21B westbound
|-
|22.77
|21B
|Punchbowl Street
|Eastbound exit and westbound entrance
|-
|
|22
|{{jct|state=HI|Route|98|dir1=west|name1=Vineyard Boulevard}}
|Westbound exit and eastbound entrance
|-
|23.10
|22
|Kinau Street
|Eastbound exit and entrance
|-
|
|23
|Lunalilo Street
|No eastbound exit
|-
|24.06
|23
|Punahou Street
|Eastbound exit and westbound entrance
|-
|25.07
|24A
|Bingham Street
|Eastbound exit and westbound entrance
|-
|
|24A
|Wilder Avenue
|Westbound exit only
|-
|25.30
|24B
|University Avenue
|
|-
|25.62
|25A
|King Street - [[Waikiki, Hawaii|Waikiki]], [[Honolulu Zoo]]
|
|-
|
|25B
|Kapiolani Boulevard
|Westbound exit and eastbound entrance
|-
|26.10
|25B
|6th Avenue
|Eastbound exit and westbound entrance
|-
|26.83
|26A
|Koko Head Avenue
|Eastbound exit and westbound entrance
|-
|27.53
|26B
|Waialae Avenue
|Signed as exit 26 westbound
|-
|28.16
|27
|Kilauea Avenue
|Westbound exit and eastbound entrance
|-
|
|
|{{jct|state=HI|Route|72|dir1=east|name1=[[Kalanianaole Highway]]}}
|Eastbound exit and westbound entrance; east end of H-1
|}
==Auxiliary routes==
*A portion of the '''Moanalua Freeway''' is designated as [[Interstate H-201]]. Until mid-2004, it was signed as [[Hawaii Route 78|Route 78]].
{{3di|H-1}}
==References==
{{Reflist}}
==External links==
*[http://www.hawaiihighways.com/oahu-freeways-H1.htm Exit List for Interstate H-1]
*[http://www.hawaiihighways.com/photos-Interstate-H1.htm Photos of Interstate H-1]
{{interstates}}
{{DEFAULTSORT:01H}}
[[Category:Interstate Highway System]]
[[Category:Interstate Highways in Hawaii]]
[[simple:Interstate H-1]]
[[de:Interstate H-1]]
[[ja:州間高速道路ハワイ1号線]]