Japan National Route 112

National Route 112
国道112号
Japan National Route 112 highlighted in red
Route information
Length	139.2 km[1] (86.5 mi)
Existed	1953–present
Major junctions
South end	National Route 13 / National Route 48 in Yamagata
North end	National Route 7 in Sakata
Location
Country	Japan
Highway system
National highways of Japan Expressways of Japan
← National Route 108 → National Route 113

National Route 112 (国道112号, Kokudō Hyaku jūnigō) is a national highway of Japan that traverses the prefecture of Yamagata in a southeast–northwest routing. It connects the prefecture's capital city, Yamagata in eastern Yamagata Prefecture to the city of Sakata on the prefecture's western coast. It has a total length of 139.2 kilometers (86.5 mi).

National Route 112 begins at a junction with National Route 13 and National Route 48 in Yamagata Prefecture's capital city, Yamagata in the eastern part of the prefecture. The highway passes through Yamagata's city center. A part of this National Route 112 in central Yamagata is closed to auto traffic during the annual Yamagata Hanagasa Festival and is utilized as a part of the primary venue for the festival.^[2] After passing through the capital city's central district, the highway curves to the northwest, passing through the town of Nakayama on the way to the city of Sagae. The highway bypasses the city's central district, traveling along the eastern and northern edge of the city. On the western fringe of Sagae the highway shares a brief concurrency with National Route 458. In the city of Tsuruoka, the highway shares concurrencies with National Route 345 and then National Route 7. After passing through the central district of Sakata, the highway ends at a junction with National Route 7 on the northern side of the city. National Route 112 has a total length of 139.2 kilometers (86.5 mi).^[1]

National Route 112 was established by the Cabinet of Japan on 18 May 1954 as Secondary National Route 112 between the cities of Yamagata and Tsuruoka. The highway was reclassified as General National Route 112 on 1 April 1965.^[3] On 1 April 1993, the highway's ending point was shifted from Tsuruoka to Sakata following an order from the Cabinet of Japan.^[4]

The route lies entirely within Yamagata Prefecture.

Location	km[5]	mi	Destinations	Notes
Yamagata	0.0	0.0	National Route 13 / National Route 48 east (Yamagata Bypass) – to Yamagata Expressway, Shinjō, Tendō, Yonezawa, Nan'yō Yamagata Prefecture Route 267 south – Zao Onsen	Southern terminus; roadway continues south as Yamagata Prefecture Route 267; interchange
	2.4	1.5	National Route 286 east – to Yamagata Expressway, Sendai, Yamagata Prefecture Office National Route 348 west – to Tōhoku-Chūō Expressway, Tsuruoka, Nagai
	3.1	1.9	Yamagata Prefecture Route 17 west
	3.6	2.2	Yamagata Prefecture Route 16 – to National Route 13, Yamagata Station, Yamagata Prefecture Office
	4.6	2.9	Yamagata Prefecture Route 19 north
	4.8	3.0	Yamagata Prefecture Route 18 south
	5.1	3.2	Yamagata Prefecture Route 22 north – Tendō Yamagata Prefecture Route 49 east – Kojirakawa	Southern end of Yamagata Prefecture Route 49 concurrency
	6.5	4.0	Yamagata Prefecture Route 49 west – to Tōhoku-Chūō Expressway, Tsuruoka, Sagae	Northern end of Yamagata Prefecture Route 49 concurrency
	9.0	5.6	Yamagata Prefecture Route 49 east – to Tōhoku-Chūō Expressway, Sendai, Yonezawa Yamagata Prefecture Route 20 north – Higashine, Tendō	Southern end of Yamagata Prefecture Route 49 concurrency
	9.4	5.8	Yamagata Prefecture Route 49 west – Yamanobe	Northern end of Yamagata Prefecture Route 49 concurrency
	10.4	6.5	Yamagata Prefecture Route 174 east – Dainome
	12.8	8.0	Yamagata Prefecture Route 275 east – to National Route 13, Tendō, Driver's License Center
Nakayama	14.1	8.8	Yamagata Prefecture Route 168 south – Yamanobe Yamagata Prefecture Route 277 north – Darumaji
	16.0	9.9	Yamagata Prefecture Route 24 east – Central Nakayama Yamagata Prefecture Route 105 south – Yamanobe	Southern end of Yamagata Prefecture Route 24 concurrency
	16.8	10.4	Yamagata Prefecture Route 178 west – Nakayama Museum of Local History
	17.2	10.7	Yamagata Prefecture Route 24 west – Ōe, Asahi Yamagata Prefecture Route 277 east – Tendō	Northern end of Yamagata Prefecture Route 24 concurrency
Sagae	17.9	11.1	Yamagata Prefecture Route 282 north – Central Sagae
	19.8	12.3	Yamagata Expressway – to Tōhoku-Chūō Expressway, Sendai, Fukushima, Sakata, Tsuruoka	Sagae Interchange (E48 exit 7)
	20.5	12.7	Yamagata Prefecture Route 144 west – Sagae Station
	21.3	13.2	Yamagata Prefecture Routes 23 / 282 – Sagae Station, Tendō
	24.3	15.1	Yamagata Prefecture Route 25 – Sagae Station, Kahoku
	26.5	16.5	Yamagata Prefecture Route 26 east – Central Sagae	Southern end of Yamagata Prefecture Route 26 concurrency
	27.0	16.8	National Route 287 / National Route 347 east – Higashine, Kahoku, Jionji Temple, Nagai, Asahi, Ōe	Interchange
	27.7	17.2	Yamagata Prefecture Route 26 west – Shiraiwa	Northern end of Yamagata Prefecture Route 26 concurrency
	28.7	17.8	Yamagata Prefecture Route 379 – Ōe, Shiraiwa
	30.7	19.1	Yamagata Prefecture Route 26 east – Shiraiwa	Southern end of Yamagata Prefecture Route 26 concurrency
	31.6	19.6	National Route 458 south / Yamagata Prefecture Route 26 west – Nagai, Ōe	Southern end of National Route 458 concurrency, northern end of Yamagata Prefecture Route 26 concurrency
	32.4	20.1	National Route 458 north – Ōkura, Sachu	Northern end of National Route 458 concurrency
Nishikawa	35.3	21.9	Yamagata Prefecture Route 291 south – Kaishu, Yoshikawa
	36.0	22.4	Yamagata Expressway – Sendai, Fukushima, Sakata, Tsuruoka	Nishikawa Interchange (E48 exit 8)
	38.4	23.9	Yamagata Prefecture Route 26 east / 54 south – Mazawa
	40.3	25.0	Yamagata Prefecture Route 292 north – Iwanezawa
	53.0	32.9	Yamagata Expressway east – Sendai, Fukushima	Gassan Interchange (E48 exit 9)
Tsuruoka	63.0	39.1	Mount Yudono Toll Road east – Mount Yudono	Interchange
	73.2	45.5	Yamagata Expressway west – Sakata	Yudonosan Interchange (E48 exit 10); northbound exit, southbound entrance
	77.8	48.3	Yamagata Prefecture Route 351 north – Ōami
	83.9	52.1	Yamagata Prefecture Route 44 – to Yamagata Expressway, Otori, Arasawa Dam, Fujishima, Haguro
	87.1	54.1	Yamagata Prefecture Route 349 south – to Yamagata Expressway	Southern end of Yamagata Prefecture Route 349 concurrency
	87.7	54.5	Yamagata Prefecture Route 349 north	Northern end of Yamagata Prefecture Route 349 concurrency
	89.1	55.4	Yamagata Prefecture Route 349 – Mount Kinbo, Shoryuji, Kawarada
	94.6	58.8	Yamagata Prefecture Route 350 north – Central Tsuruoka
	94.9	59.0	National Route 345 south (Tsuruoka-minami Bypass) – to National Route 7, Niigata, Central Tsuruoka	Southern end of National Route 345 concurrency
	95.6	59.4	Yamagata Prefecture Route 350 south – Kurokawa
	97.2	60.4	Yamagata Prefecture Route 47 – Central Tsuruoka, Mount Haguro
	99.0	61.5	National Route 345 north – to National Route 47, Shinjō Yamagata Prefecture Route 349 south – to National Route 7, Niigata, Central Tsuruoka	Northern end of National Route 345 concurrency
	100.4	62.4	Yamagata Prefecture Route 350 – Central Tsuruoka, Mikawa
	102.4	63.6	National Route 7 north (Mikawa Bypass) – to Shonai Airport, Akita, Sakata Yamagata Prefecture Route 350 south (Tsuruoka Bypass) – Takarada, Hodashi	Southern end of National Route 7 concurrency
	103.7	64.4	Yamagata Prefecture Route 332 – Yunohama, Central Tsuruoka
	105.9	65.8	National Route 7 south (Tsuruoka Bypass) – to Nihonkai-Tōhoku Expressway, Yamagata Expressway, Niigata, Murakami Yamagata Prefecture Route 47 east – Mount Haguro, Tsuruoka City Office	Northern end of National Route 7 concurrency
	109.1	67.8	Yamagata Prefecture Route 38 north / 50 east – to Shonai Airport, Sakata, Yunohama Yamagata Prefecture Route 338 south – to National Route 7, Yutagawa	Southern end of concurrency with Yamagata Prefecture Routes 38 and 50
	109.8	68.2	Yamagata Prefecture Route 38 south – Mizusawa	Northern end of Yamagata Prefecture Route 38 concurrency
	110.6	68.7	Yamagata Prefecture Route 336 west – to National Route 7, Niigata
	113.3	70.4	Yamagata Prefecture Route 43 ends Yamagata Prefecture Route 50 west – Kamo Port, Yura	Southern end of Yamagata Prefecture Route 43 concurrency, northern end of Yamagata Prefecture Route 50 concurrency
	117.8	73.2	Yamagata Prefecture Route 43 east – Mikawa, Oyama	Northern end of Yamagata Prefecture Route 43 concurrency
Sakata	121.8	75.7	Yamagata Prefecture Route 118 east – to Nihonkai-Tōhoku Expressway, National Route 7, Shonai Airport, Mikawa
	122.6	76.2	Yamagata Prefecture Route 357 east – to National Route 7, Mikawa
	131.6	81.8	Yamagata Prefecture Route 355 – Miyanoura, Ken Domon Museum of Photography, Tohoku University of Community Service and Science
	133.4	82.9	Yamagata Prefecture Route 353 – to Nihonkai-Tōhoku Expressway, National Route 7, Sakata Station, Yurihonjō
	134.1	83.3	Yamagata Prefecture Route 42 – Sakata Port, Matsuyama
	134.9	83.8	Yamagata Prefecture Route 41 east – Sakata Station
	135.3	84.1	Yamagata Prefecture Route 353 south	Southern end of Yamagata Prefecture Route 353 concurrency
	136.2	84.6	Yamagata Prefecture Route 353 north	Northern end of Yamagata Prefecture Route 353 concurrency
	139.2	86.5	National Route 7 (Sakata Bypass) – to Nihonkai-Tōhoku Expressway, Niigata, Tsuruoka, Akita, Yurihonjō	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus       Incomplete access       Route transition

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