Japan National Route 106

National Route 106
National Route 106
国道106号
Miyako–Morioka Connector (宮古盛岡横断道路, Miyako–Morioka Ōdandōro)
	National Route 106 highlighted in red
Route information
Length	92.4 km (57.4 mi)
Existed	1953–present
Major junctions
East end	National Route 45 in Miyako
	Sanriku Expressway; National Route 340; National Route 4;
West end	National Route 455 in Morioka
Location
Country	Japan
Highway system
	National highways of Japan; Expressways of Japan;

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.

Route description

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]

History

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 features

The route lies entirely within Iwate Prefecture.

Location	km^[2]	mi	Destinations	Notes
Miyako	0.0	0.0	National Route 45 – Kamaishi, Kuji, Central Miyako, Jōdogahama, Fishery museum	Eastern terminus
	4.1	2.5	Iwate Prefecture Route 40 north – Central Miyako, Miyako Station Miyako Road – Sanriku Expressway
	4.9	3.0	Iwate Prefecture Route 200 south – Hanawa
	6.5	4.0	Miyakonishi Road east – to Sanriku Expressway	Interchange
	16.8	10.4	Iwate Prefecture Route 115 west – Moichi Station
	16.9	10.5	National Route 340 north – Iwaizumi	Eastern end of National Route 340 concurrency
	31.0	19.3	Iwate Prefecture Route 143 south – Rikuchū-Kawai Station
	32.4	20.1	National Route 340 south – Tōno, Ōtsuchi	Western end of National Route 340 concurrency
	41.5	25.8	Iwate Prefecture Route 142 south – Kawauchi Station	Partial interchange
	58.7	36.5	Iwate Prefecture Route 171 north – Iwaizumi
Morioka	79.1	49.2	Iwate Prefecture Route 43 south – Nagano Pass, Nedamo
	81.4	50.6	Tonan-Kawame Road west – Kawame	Kawame Interchange
	82.8	51.4	Iwate Prefecture Route 36 north – Tsunatori Dam	Eastern end of Iwate Prefecture Route 36 concurrency
	84.3	52.4	Iwate Prefecture Route 36 south – to Tōhoku Expressway, National Route 396, Tōno	Western end of Iwate Prefecture Route 36 concurrency
	89.6	55.7	National Route 4 (Morioka Bypass) – to Tōhoku Expressway, National Route 46, Hanamaki, Ninohe, Akita
	92.4	57.4	National Route 455 east (Chūō-dōri) – Morioka Station, Iwate Prefecture Office	Western terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus

References

^ "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.
^ ^a ^b "National Route 106" (Map). Google Maps. Retrieved 10 June 2020.
^ "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.
^ "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.