National Route 280
国道280号
Japan National Route 280 highlighted in red
Route information
Length	171.7 km[1] (106.7 mi) Distance does not include the defunctMinmaya-Fukushima ferry route, but does include bypasses signed with the same route number
Existed	1 April 1970–present
Major junctions
North end	National Route 5 inHakodate, Hokkaido
Major intersections	National Route 228 Minmaya-Fukushima Ferry acrossTsugaru Strait (defunct) National Route 339
South end	National Route 7 inAomori, Aomori
Location
Country	Japan
Highway system
National highways of Japan Expressways of Japan
←National Route 279 →National Route 281

National Route 280 (国道280号,Kokudō Nihyaku hachi-jugō) is anational highway ofJapan that traverses theprefectures,Aomori andHokkaido as well as theTsugaru Strait that separates them. It currently is made up of two sections that travel 150.7 kilometres (93.6 mi) fromAomori, north across theTsugaru Peninsula toSotogahama where the first section ends at the site of a former ferry to across the Tsugaru Strait to the town,Fukushima. The other section begins at the corresponding former ferry terminal in Fukushima. The road then travels alongside the southern coast of Hokkaido concurrently withNational Route 228 toHakodate where the route meets its northern terminus.

National Route 280's path across Aomori and Hokkaido follows one of the oldest roads in northern Japan, theMatsumaedō. It was established byTokugawa Ieyasu for government officials traveling through the area as a branch of theEdo Five Routes and it had some defensive importance to the Japanese who feared aRussian incursion intoEzo, which was ruled by theMatsumae clan.^[2]

The southern terminus of National Route 280 lies at an intersection withNational Route 7 just over 500 metres (1,600 ft) southwest ofAomori Station to the west of the central district of Aomori. From there, the route generally travels northwest through the city streets as it makes its way out of the city. NearAburakawa Station, the route begins closely paralleling the coast ofAomori Bay, it continues paralleling the coast throughout its path on theTsugaru Peninsula. InMinmaya at the northern end of the peninsula, the roadway designation switches toNational Route 339. At this point a ferry once carried the route across theTsugaru Strait, but it has ceased operation.^[3]

National Route 280's path through Hokkaido begins at the port where the ferry from Minmaya used to travel to inFukushima. The road briefly travels southwest toNational Route 228. From that junction, National Route 280 runs concurrently with National Route 228 the rest of the way to its northern terminus inHakodate. The routes run parallel to the southern coast of Hokkaido along the Tsugaru Strait on their way to Hakodate. The northern terminus of National Route 280 lies about 1.7 kilometres (1.1 mi) north ofHakodate Station at a junction withNational Route 5.^[4]

What is known today as National Route 280 was originally established during theEdo period byTokugawa Ieyasu as theMatsumaedō. Its primary purpose was for government officials traveling through the area as a branch of theŌshū Kaidō, one of theEdo Five Routes connecting the capital to the rest of Japan. It also had defensive importance to the Japanese who feared aRussian incursion intoEzo, which was ruled by theMatsumae clan; however, the main threat to Japanese control of the area wasrebellion by the nativeAinu.^[2][5]

National Route 280 was established by theCabinet of Japan along the Edo period road and the ferry linking Sotogahama and Fukushima in 1970.^[6] The ferry service along National Route 280 was discontinued in 1998, leaving the non-contiguous sections of the route without a direct road link.^[7]

All junctions listed areat-grade intersections unless noted otherwise.

Prefecture	Location	km	mi	Destinations	Notes
Aomori	Aomori	0.0	0.0	National Route 7 (Aomori West Bypass) /National Route 101 –Towada, Central Aomori,Shin-Aomori Station,Aomori-chūō	Southern terminus
		4.4	2.7	Aomori Prefecture Route 234 south – Shinjo, National Route 7
		4.8	3.0	Aomori Prefecture Route 26 west –Goshogawara
		10.5	6.5	Aomori Prefecture Route 2 west –Tsugaru, Goshogawara
	Sotogahama	26.7	16.6	Aomori Prefecture Route 12 (Yamanami Line) west –Tappi,Nakadomari
	Imabetsu	60.6	37.7	Aomori Prefecture Route 14 – Aomori, Sotogahama, Imabetsu town office
	Sotogahama	64.8	40.3	Aomori Prefecture Route 230 –Minmaya Station
		66.3	41.2	National Route 339 south / Aomori Prefecture Route 230	Northern terminus of Aomori Prefecture segment; roadway continues as National Route 339
Tsugaru Strait		66.3 83.3	41.2 51.8	Sanpuku Ferry (defunct)
Hokkaido	Fukushima	83.3	51.8		Southern terminus of Hokkaido segment
		83.7	52.0	National Route 228	Southern terminus of National Route 228 concurrency
		84.6	52.6	Hokkaido Route 532 east – Iwabe	Southern terminus of Hokkaido Route 532 concurrency
		85.1	52.9	Hokkaido Route 532 west	Northern terminus of Hokkaido Route 532 concurrency
		98.0	60.9	Hokkaido Route 812 north
	Shiriuchi	100.8	62.6	Hokkaido Route 698 east
		110.2	68.5	Hokkaido Route 531 south – Kotaniishi
		110.8	68.8	Hokkaido Route 698 west
	Kikonai	117.3	72.9	Hokkaido Route 383 north –Esashi, Central Kikonai
		119.7	74.4	Hokkaido Route 5 west – Esashi,Kikonai Station
	Hokuto	138.8	86.2	Hokkaido Route 29 west – Central Moheji,Hakodate-Esashi Expressway (northbound)
		143.0	88.9	Hakodate-Esashi Expressway	E59 exit 4 (Hokuto-Tomigawa Interchange); entrance to northbound E59, exit from southbound E59
		150.7	93.6	National Route 227 west –Sapporo, Esashi, Hakodate-Esashi Expressway	Southern terminus of National Route 227 concurrency
	Hakodate	153.2	95.2	Hokkaido Route 347 east
		150.7	93.6	National Route 5 / Hokkaido Route 571 east –Oshamambe,Mori,Mount Hakodate,Hakodate Station,Yunokawa,Goryōkaku Park	Northern terminus; eastern terminus of National Routes 227 and 228; roadway continues as Hokkaido Route 571
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Closed/former       Concurrency terminus       Incomplete access

• Japan portal
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• Media related toCategory:Route 280 (Japan) at Wikimedia Commons

• National highways in Japan with maritime sections
• Roads in Aomori Prefecture
• Roads in Hokkaido
• 1970 establishments in Japan

• CS1 Japanese-language sources (ja)
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