Japan National Route 106

National Route 106 (国道106号, Kokudō Hyaku-rokugō) is a national highway of Japan that connects the cities of Miyako and Morioka in Iwate Prefecture. As of June 2020, it has a total length of 92.4 kilometers (57.4 mi), though the highway is in the process of being upgraded to the Miyako–Morioka Connector (宮古盛岡横断道路, Miyako–Morioka Ōdandōro), which will follow a shorter route than the older highway. It is paralleled for most of its length by JR East's Yamada Line.

National Route 106 shield

National Route 106
Miyako–Morioka Connector (宮古盛岡横断道路, Miyako–Morioka Ōdandōro)
National Route 106 highlighted in red
Route information
Length92.4 km[1] (57.4 mi)
Major junctions
East end National Route 45 in Miyako
West end National Route 455 in Morioka
Highway system
National highways of Japan
Expressways of Japan
Japanese National Route Sign 0105.svg National Route 105Japanese National Route Sign 0107.svg National Route 107

Route descriptionEdit

National Route 106 in Morioka

National Route 106 is one of the primary west-east highways in Iwate Prefecture and the main route between the cities of Miyako on the Pacific coast and Morioka in the prefecture's interior plains. It carries traffic across the Kitakami Mountains that separate the two cities. The highway has a total length of 92.4 kilometers (57.4 mi).[2]


What would eventually become National Route 106 was the 宮古街道 (Miyako Kaidō), a road linking Morioka and Miyako that was established in 1881. Work began in 1963 to upgrade the Miyako Kaidō to National Route 106 after the route was designated as Secondary National Route 106 in 1953. The secondary route designation was merged with the primary routes in 1963. The upgrades to the route were completed in 1978[3]

After the 2011 Tōhoku earthquake and tsunami, plans were created to streamline the highway's route by a series of tunnels and bridges through the Kitakami Mountains between Miyako and Morioka. Some sections will be upgraded to expressway standards as the highway is rebuilt.[4]

List of major junctions and featuresEdit

The route lies entirely within Iwate Prefecture.

Miyako0.00.0  National Route 45 – Kamaishi, Kuji, Central Miyako, Jōdogahama, Fishery museumEastern terminus
4.12.5Iwate Prefecture Route 40 north – Central Miyako, Miyako Station
  Miyako Road – Sanriku Expressway
4.93.0Iwate Prefecture Route 200 south – Hanawa
6.54.0   Miyakonishi Road east – to Sanriku ExpresswayInterchange
16.810.4Iwate Prefecture Route 115 west – Moichi Station
16.910.5  National Route 340 north – IwaizumiEastern end of National Route 340 concurrency
31.019.3Iwate Prefecture Route 143 south – Rikuchū-Kawai Station
32.420.1  National Route 340 south – Tōno, ŌtsuchiWestern end of National Route 340 concurrency
41.525.8Iwate Prefecture Route 142 south – Kawauchi StationPartial interchange
58.736.5Iwate Prefecture Route 171 north – Iwaizumi
Morioka79.149.2Iwate Prefecture Route 43 south – Nagano Pass, Nedamo
81.450.6  Tonan-Kawame Road west – KawameKawame Interchange
82.851.4Iwate Prefecture Route 36 north – Tsunatori DamEastern end of Iwate Prefecture Route 36 concurrency
84.352.4   Iwate Prefecture Route 36 south – to Tōhoku Expressway, National Route 396, TōnoWestern end of Iwate Prefecture Route 36 concurrency
89.655.7    National Route 4 (Morioka Bypass) – to Tōhoku Expressway, National Route 46, Hanamaki, Ninohe, Akita
92.457.4   National Route 455 east (Chūō-dōri) – Morioka Station, Iwate Prefecture OfficeWestern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See alsoEdit


  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. ^ a b Google (10 June 2020). "National Route 106" (Map). Google Maps. Google. Retrieved 10 June 2020.
  3. ^ "岩手県の道路の略年表" [Chronology of Iwate Prefecture's roads] (PDF). Iwate Prefecture Government. Archived from the original (PDF) on 4 March 2016. Retrieved 12 June 2020.
  4. ^ "国道106号 宮古盛岡横断道路 改築事業" [National Route 106 Miyako–Morioka Connector Reconstruction Project] (in Japanese). Iwate River and National Highway Office. Retrieved 9 June 2020.

External linksEdit