Japan National Route 46

National Route 46 (国道46号, Kokudō yonjūrokugō) is a national highway of Japan that connects the capital cities of Iwate Prefecture and Akita Prefecture, Morioka and Akita. It has a total length of 121.4 kilometers (75.4 mi).

National Route 46
国道46号
National Route 46 highlighted in red
Route information
Length121.4 km[1] (75.4 mi)
Existed1 April 1963–present
Major junctions
East end National Route 4 in Morioka
 
West end National Route 7 in Akita
Highway system
National highways of Japan
Expressways of Japan
← National Route 45→ National Route 47

Route description
The expressway section of the highway in Semboku

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 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 121.4 kilometers (75.4 mi).[2]

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 the Ōu Mountains was deemed to be insufficient. An 11.6-kilometer-long (7.2 mi) upgraded section of National Route 46, known as the Sengan Road (仙岩道路, Sengan-dōro), was completed in November 1977 to supplement the inadequate road over the mountains.[3]

Major intersections

All junctions listed are at-grade intersections unless noted otherwise.

PrefectureLocationkm[2]miDestinationsNotes
IwateMorioka0.00.0 National Route 4 (Morioka Bypass) – Ninohe, Hanamaki, Central Morioka
Iwate Prefecture Route 36 east – to National Route 106, National Route 396, Tōno, Miyako		Eastern terminus; eastern end of Iwate Prefecture Route 36 concurrency
1.20.75Iwate Prefecture Route 120 south – Yahaba, Iwate-Iioka StationInterchange
2.41.5 Iwate Prefecture Route 36 west – to Tōhoku ExpresswayWestern end of Iwate Prefecture Route 36 concurrency
5.53.4 Unnamed city roads – to National Route 4, Morioka Station
6.33.9 Iwate Prefecture Route 293 north – Morioka Station
7.04.3 Iwate Prefecture Route 13 – Hanamaki Onsen, Distribution Center, Morioka Station, Iwate Prefecture Office
8.35.2 Iwate Prefecture Route 16 (Morioka Loop Route) – Lake Gosho, Morioka Station
10.46.5 Iwate Prefecture Route 1 east – to National Route 4, Aoyama, Morioka Station, NinoheEastern end of Iwate Prefecture Route 1 concurrency
11.37.0 Tōhoku Expressway – Aomori, Hachinohe, SendaiMorioka Interchange (E4 exit 42)
Takizawa12.67.8Iwate Prefecture Route 16 (Morioka Loop Route) north – TakizawawakareEastern end of Iwate Prefecture Route 16 concurrency
13.18.1Iwate Prefecture Route 130 north – Ōkama Station
14.08.7Iwate Prefecture Route 16 (Morioka Loop Route) south – Distribution Center, Lake GoshoWestern end of Iwate Prefecture Route 16 concurrency
Morioka17.610.9Iwate Prefecture Route 131 north – Koiwai
Iwate Prefecture Route 258 south – Tsunagi
Shizukuishi20.512.7Iwate Prefecture Route 1 west – Yokote, ShizukuishiWestern end of Iwate Prefecture Route 1 concurrency
23.114.4Iwate Prefecture Route 212 – Amihari, Shizukuishi Station
36.822.9Iwate Prefecture Route 266 west – Mount Akita-Komagatake
AkitaSemboku52.332.5 National Route 341 north – Kazuno, Lake Tazawa, Tamagawa DamEastern end of National Route 341 concurrency
64.540.1Akita Prefecture Route 50 south – Misato, Dakigaeri Gorge
69.042.9 National Route 341 south – to National Route 105, DaisenWestern end of National Route 341 concurrency, eastern end of expressway section
69.943.4 National Route 105 – Kitaakita, DaisenInterchange
71.244.2Akita Prefecture Route 250 – Central KakunodateInterchange
73.245.5 National Route 341 – Kariwano, Central KakunodateInterchange
74.346.2 National Route 341 north – YamazakiEastern end of National Route 341 concurrency, western end of expressway section
75.647.0Akita Prefecture Route 253 south – Nagano
Daisen85.353.0Akita Prefecture Route 252 south – Yurihonjō, Kariwano
94.858.9 National Route 13 / National Route 341 south – to Akita Expressway, Yokote, Daisen, Noshiro, AkitaEastern end of National Route 13 concurrency, western end of National Route 341 concurrency
98.060.9Akita Prefecture Route 28 west – Funaoka, Kyowa ski area
Akita104.564.9Akita Prefecture Route 308 north – Taihei, Iwamisannai
106.566.2Akita Prefecture Route 62 north – Taihei, Tegata
Akita Prefecture Route 175 south – Wada Station		Eastern end of Akita Prefecture Route 62 concurrency
107.266.6  Akita Prefecture Route 62 south – to Nihonkai-Tōhoku Expressway, Akita Airport, Akita Prefectural Central Park, YūwaWestern end of Akita Prefecture Route 62 concurrency
109.468.0 Akita Expressway – Sendai, Yokote, Noshiro, Ōdate, Yokote, KitakamiAkita-minami Interchange (E7 exit 6)
112.970.2Akita Prefecture Route 41 – Goshono New Town, Nibetsu Forest, TegataInterchange
114.471.1 Akita Prefecture Route 9 south – Yūwa, Akita Airport
115.271.6 Akita Prefecture Route 61 south – to National Route 7, Yurihonjō, Araya
118.473.6 Akita Prefecture Route 28 east – Akita Station
118.973.9Akita Prefecture Route 56 – Sakata, Yurihonjō, Central Akita
121.475.4 National Route 7 – Sakata, Yurihonjō, Ōdate, Noshiro
Akita Prefecture Route 26 east – Akita Station, Akita City Hall, Akita Prefecture Office		Western terminus, western end of National Route 13 concurrency
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also
  •  Japan portal
  •  Roads portal

References
  1. "一般国道の路線別、都道府県別道路現況" [Road statistics by General National Highway route and prefecture] (PDF) (in Japanese). Ministry of Land, Infrastructure, Transport and Tourism. Retrieved 19 February 2020.
  2. Google (16 June 2020). "National Route 46" (Map). Google Maps. Google. Retrieved 16 June 2020.
  3. "強く美しい岩手 -事務所紹介(沿革)" [Strong and beautiful Iwate - History of the office] (in Japanese). Archived from the original on 22 October 2018. Retrieved 12 June 2020.
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