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is a national highway of
National Route 46 is one of the primary east-west highways in the prefectures of Akita and Iwate and the main route between the cities of Morioka in the Iwate Prefecture's interior plains and the city of Akita on the Sea of Japan coast. It carries traffic across the
Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
that connects the capital cities of Iwate Prefecture
is a prefecture of Japan located in the Tōhoku region of Honshu. It is the second-largest Japanese prefecture at , with a population of 1,210,534 (as of October 1, 2020). Iwate Prefecture borders Aomori Prefecture to the north, Akita Prefectur ...
and Akita Prefecture
is a Prefectures of Japan, prefecture of Japan located in the Tōhoku region of Honshu.Nussbaum, Louis-Frédéric. (2005). "Provinces and prefectures" in ; "Tōhoku" in . Its population is approximately 966,000 (as of 1 October 2019) and its ge ...
, Morioka
is the capital city of Iwate Prefecture located in the Tōhoku region of northern Japan. On 1 February 2021, the city had an estimated population of 290,700 in 132,719 households, and a population density of . The total area of the city is .
...
and Akita
is a Japanese name and may refer to:
Places
* 8182 Akita, a main-belt asteroid
* Akita Castle, a Nara period fortified settlement in Akita, Japan
* Akita Domain, also known as Kubota Domain, feudal domain in Edo period Japan
* Akita, Kumamoto, ...
. It has a total length of .
Route description
National Route 46 is one of the primary east-west highways in the prefectures of Akita and Iwate and the main route between the cities of Morioka in the Iwate Prefecture's interior plains and the city of Akita on the Sea of Japan coast. It carries traffic across the Ōu Mountains
The are a mountain range in the Tōhoku region of Honshū, Japan. The range is the longest range in Japan and stretches south from the Natsudomari Peninsula of Aomori Prefecture to the Nasu volcanoes at the northern boundary of the Kantō re ...
that separate the two cities. The highway's eastern terminus lies at a junction with National Route 4 southeast of central Morioka. It has significant concurrencies with National Route 13 and National Route 341. A section of the highway is built to expressway standards in the city of Semboku. The highway along with National Route 13, meets its western terminus at a junction with National Route 7 to the west of central Akita. The highway has a total length of .
History
National Route 46 was originally designated on 18 May 1953 as National Route 105, and this was redesignated as National Route 46 when the route was promoted to a primary national highway. The highway was completed in December 1975, but the road over theŌu Mountains
The are a mountain range in the Tōhoku region of Honshū, Japan. The range is the longest range in Japan and stretches south from the Natsudomari Peninsula of Aomori Prefecture to the Nasu volcanoes at the northern boundary of the Kantō re ...
was deemed to be insufficient. An upgraded section of National Route 46, known as the , was completed in November 1977 to supplement the inadequate road over the mountains.
Major intersections
All junctions listed are at-grade intersections unless noted otherwise.See also
* *References
External links
* {{National Routes of Japan, 46 046 Roads in Akita Prefecture Roads in Iwate Prefecture