The
Hawaii Department of Transportation
The Hawaii Department of Transportation (HDOT) is a state government organization which oversees transportation in the U.S. state of Hawaii. The agency is divided into three divisions dealing with aviation, maritime, and roads.
HDOT Divisions A ...
(HDOT) maintains the smallest state-maintained system of
state highways
A state highway, state road, or state route (and the equivalent provincial highway, provincial road, or provincial route) is usually a road that is either ''numbered'' or ''maintained'' by a sub-national state or province. A road numbered by a ...
in the country. It consists of
Interstates
The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, is a network of controlled-access highways that forms part of the National Highway System in the United States. Th ...
, state highways, and secondary state highways, totaling approximately .
The state's four Interstates, all located on O‘ahu, are built to
mainland standards unlike their counterparts in
Alaska
Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U ...
and
Puerto Rico
Puerto Rico (; abbreviated PR; tnq, Boriken, ''Borinquen''), officially the Commonwealth of Puerto Rico ( es, link=yes, Estado Libre Asociado de Puerto Rico, lit=Free Associated State of Puerto Rico), is a Caribbean island and unincorporated ...
. The first three routes (
H-1,
H-2, and
H-3) were approved in 1960, while an auxiliary route (
H-201) was added in 1989.
Primary and auxiliary interstates
Primary and secondary routes
The current state (then territorial) highway numbering system was established in 1955. Route numbers are organized so that the initial digit corresponds to the island:
* Numbers beginning with 1 or 2:
Hawaiʻi
Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only stat ...
* Numbers beginning with 3:
Maui
The island of Maui (; Hawaiian: ) is the second-largest of the islands of the state of Hawaii at 727.2 square miles (1,883 km2) and is the 17th largest island in the United States. Maui is the largest of Maui County's four islands, whic ...
* Numbers beginning with 4:
Molokaʻi
Molokai , or Molokai (), is the fifth most populated of the eight major islands that make up the Hawaiian Islands archipelago in the middle of the Pacific Ocean. It is 38 by 10 miles (61 by 16 km) at its greatest length and width with a us ...
,
Lānaʻi
Lanai ( haw, Lānai, , , also ,) is the sixth-largest of the Hawaiian Islands and the smallest publicly accessible inhabited island in the chain. It is colloquially known as the Pineapple Island because of its past as an island-wide pineapple pl ...
* Numbers beginning with 5:
Kauaʻi
Kauai, () anglicized as Kauai ( ), is geologically the second-oldest of the main Hawaiian Islands (after Niʻihau). With an area of 562.3 square miles (1,456.4 km2), it is the fourth-largest of these islands and the 21st largest island ...
* Numbers beginning with 6 to 9:
Oʻahu
Oahu () ( Hawaiian: ''Oʻahu'' ()), also known as "The Gathering Place", is the third-largest of the Hawaiian Islands. It is home to roughly one million people—over two-thirds of the population of the U.S. state of Hawaii. The island of O� ...
In general, two-digit numbers are primary highways, maintained by the state. Three-digit routes are typically secondary arterials or collectors, while four-digit routes are typically collectors and minor roads. For secondary routes, the first two digits generally relate to the associated primary route. Many secondary routes are county-maintained and unsigned, their route numbers being used merely by state agencies as an asset-tracking measure.
When referring to highways, Hawaiʻi residents usually refer to state highways by their names instead of their route numbers (e.g. ''Kamehameha Highway'' instead of
Route 99). Note that one named highway may encompass several route numbers (e.g. Kamehameha Highway, which carries Routes 80, 83, 99, and 830 at various points along its length) and vice versa.
Temporary Federal routes
During
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...
, a temporary Federal route numbering system was setup on the island of Oahu. They were used to assist military personnel not accustomed to the Hawaiian street names during the time of
Martial law
Martial law is the imposition of direct military control of normal civil functions or suspension of civil law by a government, especially in response to an emergency where civil forces are overwhelmed, or in an occupied territory.
Use
Martia ...
in the
Territory of Hawaii
The Territory of Hawaii or Hawaii Territory ( Hawaiian: ''Panalāʻau o Hawaiʻi'') was an organized incorporated territory of the United States that existed from April 30, 1900, until August 21, 1959, when most of its territory, excluding ...
from 1941 to 1945. Though marked with
U.S. Route shields, they were never part of the
United States Numbered Highway System
The United States Numbered Highway System (often called U.S. Routes or U.S. Highways) is an integrated network of roads and highways numbered within a nationwide grid in the contiguous United States. As the designation and numbering of these h ...
.
See also
*
*
References
External links
AARoads Hawaii Highways PageHawaii Highways
{{Hawaii
1955 establishments in Hawaii
State Highways
A state highway, state road, or state route (and the equivalent provincial highway, provincial road, or provincial route) is usually a road that is either ''numbered'' or ''maintained'' by a sub-national state or province. A road numbered by a ...
Hawaii
Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only stat ...