# Japan National Route 112

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).

## Route description

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. 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).

## History

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. On 1 April 1993, the highway's ending point was shifted from Tsuruoka to Sakata following an order from the Cabinet of Japan.

## Major junctions

The route lies entirely within Yamagata Prefecture.
| Location | km | 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 |
| Yamagata | 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 | |
| Yamagata | 3.1 | 1.9 | Yamagata Prefecture Route 17 west | |
| Yamagata | 3.6 | 2.2 | Yamagata Prefecture Route 16 – to National Route 13, Yamagata Station, Yamagata Prefecture Office | |
| Yamagata | 4.6 | 2.9 | Yamagata Prefecture Route 19 north | |
| Yamagata | 4.8 | 3.0 | Yamagata Prefecture Route 18 south | |
| Yamagata | 5.1 | 3.2 | Yamagata Prefecture Route 22 north – Tendō Yamagata Prefecture Route 49 east – Kojirakawa | Southern end of Yamagata Prefecture Route 49 concurrency |
| Yamagata | 6.5 | 4.0 | Yamagata Prefecture Route 49 west – to Tōhoku-Chūō Expressway, Tsuruoka, Sagae | Northern end of Yamagata Prefecture Route 49 concurrency |
| Yamagata | 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 |
| Yamagata | 9.4 | 5.8 | Yamagata Prefecture Route 49 west – Yamanobe | Northern end of Yamagata Prefecture Route 49 concurrency |
| Yamagata | 10.4 | 6.5 | Yamagata Prefecture Route 174 east – Dainome | |
| Yamagata | 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 | |
| Nakayama | 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 |
| Nakayama | 16.8 | 10.4 | Yamagata Prefecture Route 178 west – Nakayama Museum of Local History | |
| Nakayama | 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 | |
| Sagae | 19.8 | 12.3 | Yamagata Expressway – to Tōhoku-Chūō Expressway, Sendai, Fukushima, Sakata, Tsuruoka | Sagae Interchange (E48 exit 7) |
| Sagae | 20.5 | 12.7 | Yamagata Prefecture Route 144 west – Sagae Station | |
| Sagae | 21.3 | 13.2 | Yamagata Prefecture Routes 23 / 282 – Sagae Station, Tendō | |
| Sagae | 24.3 | 15.1 | Yamagata Prefecture Route 25 – Sagae Station, Kahoku | |
| Sagae | 26.5 | 16.5 | Yamagata Prefecture Route 26 east – Central Sagae | Southern end of Yamagata Prefecture Route 26 concurrency |
| Sagae | 27.0 | 16.8 | National Route 287 / National Route 347 east – Higashine, Kahoku, Jionji Temple, Nagai, Asahi, Ōe | Interchange |
| Sagae | 27.7 | 17.2 | Yamagata Prefecture Route 26 west – Shiraiwa | Northern end of Yamagata Prefecture Route 26 concurrency |
| Sagae | 28.7 | 17.8 | Yamagata Prefecture Route 379 – Ōe, Shiraiwa | |
| Sagae | 30.7 | 19.1 | Yamagata Prefecture Route 26 east – Shiraiwa | Southern end of Yamagata Prefecture Route 26 concurrency |
| Sagae | 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 |
| Sagae | 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 | |
| Nishikawa | 36.0 | 22.4 | Yamagata Expressway – Sendai, Fukushima, Sakata, Tsuruoka | Nishikawa Interchange (E48 exit 8) |
| Nishikawa | 38.4 | 23.9 | Yamagata Prefecture Route 26 east / 54 south – Mazawa | |
| Nishikawa | 40.3 | 25.0 | Yamagata Prefecture Route 292 north – Iwanezawa | |
| Nishikawa | 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 |
| Tsuruoka | 73.2 | 45.5 | Yamagata Expressway west – Sakata | Yudonosan Interchange (E48 exit 10); northbound exit, southbound entrance |
| Tsuruoka | 77.8 | 48.3 | Yamagata Prefecture Route 351 north – Ōami | |
| Tsuruoka | 83.9 | 52.1 | Yamagata Prefecture Route 44 – to Yamagata Expressway, Otori, Arasawa Dam, Fujishima, Haguro | |
| Tsuruoka | 87.1 | 54.1 | Yamagata Prefecture Route 349 south – to Yamagata Expressway | Southern end of Yamagata Prefecture Route 349 concurrency |
| Tsuruoka | 87.7 | 54.5 | Yamagata Prefecture Route 349 north | Northern end of Yamagata Prefecture Route 349 concurrency |
| Tsuruoka | 89.1 | 55.4 | Yamagata Prefecture Route 349 – Mount Kinbo, Shoryuji, Kawarada | |
| Tsuruoka | 94.6 | 58.8 | Yamagata Prefecture Route 350 north – Central Tsuruoka | |
| 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 |
| Tsuruoka | 95.6 | 59.4 | Yamagata Prefecture Route 350 south – Kurokawa | |
| Tsuruoka | 97.2 | 60.4 | Yamagata Prefecture Route 47 – Central Tsuruoka, Mount Haguro | |
| Tsuruoka | 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 |
| Tsuruoka | 100.4 | 62.4 | Yamagata Prefecture Route 350 – Central Tsuruoka, Mikawa | |
| Tsuruoka | 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 |
| Tsuruoka | 103.7 | 64.4 | Yamagata Prefecture Route 332 – Yunohama, Central Tsuruoka | |
| 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 |
| Tsuruoka | 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 |
| Tsuruoka | 109.8 | 68.2 | Yamagata Prefecture Route 38 south – Mizusawa | Northern end of Yamagata Prefecture Route 38 concurrency |
| Tsuruoka | 110.6 | 68.7 | Yamagata Prefecture Route 336 west – to National Route 7, Niigata | |
| Tsuruoka | 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 |
| Tsuruoka | 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 | |
| Sakata | 122.6 | 76.2 | Yamagata Prefecture Route 357 east – to National Route 7, Mikawa | |
| Sakata | 131.6 | 81.8 | Yamagata Prefecture Route 355 – Miyanoura, Ken Domon Museum of Photography, Tohoku University of Community Service and Science | |
| Sakata | 133.4 | 82.9 | Yamagata Prefecture Route 353 – to Nihonkai-Tōhoku Expressway, National Route 7, Sakata Station, Yurihonjō | |
| Sakata | 134.1 | 83.3 | Yamagata Prefecture Route 42 – Sakata Port, Matsuyama | |
| Sakata | 134.9 | 83.8 | Yamagata Prefecture Route 41 east – Sakata Station | |
| Sakata | 135.3 | 84.1 | Yamagata Prefecture Route 353 south | Southern end of Yamagata Prefecture Route 353 concurrency |
| Sakata | 136.2 | 84.6 | Yamagata Prefecture Route 353 north | Northern end of Yamagata Prefecture Route 353 concurrency |
| Sakata | 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 |||||