# Japan National Route 116

National Route 116 (国道116号, Kokudō Hyaku jūrokugō) is a national highway of Japan that traverses the prefecture of Niigata in a southwest–northeast routing. It connects the city of Kashiwazaki in south-central Niigata Prefecture to the prefecture's capital city, Niigata, to the north along the Sea of Japan coastline. It has a total length of 78.9 kilometers (49.0 mi).

## Route description

National Route 116 mainly functions as an alternative route to National Route 8 and the Hokuriku Expressway between the cities of Kashiwazaki and Niigata. It runs closer to the coastline of the Sea of Japan, while the aforementioned highways take a more inland route. It also takes a more rural route between Kashiwazaki and Niigata. While National Route 8 travels through the center of the cities Nagaoka, Mitsuke, and Sanjō, National Route 116 passes only through the center of the city of Tsubame. A 7.9-kilometer-long (4.9 mi) section of the highway in Niigata makes up the southernmost section of the Niigata Bypass, a limited-access road that travels along the eastern edge of the city's center.

## History

National Route 116 was established by the Cabinet of Japan on 18 May 1954 as Secondary National Route 116 between the cities of Kashiwazaki and Niigata. The highway was reclassified as General National Route 116 on 1 April 1965. The highway was heavily damaged in Kashiwazaki during the 2007 Chūetsu offshore earthquake. Several sections of the roadway collapsed or were displaced during the earthquake; however, local authorities were able to repair the damage by the end of the day after the earthquake. On 1 April 2008, the highway's route through Niigata was shifted onto the limited-access Niigata Bypass.

## Major junctions

The route lies entirely within Niigata Prefecture.
| Location | km | mi | Destinations | Notes |
| Kashiwazaki | 0.0 | 0.0 | National Route 8 – Nagaoka, Itoigawa, Jōetsu | Southern terminus |
| Kariwa | 4.0 | 2.5 | Niigata Prefecture Route 73 – to National Route 352, Kariwa Station, Sochi | |
| Kashiwazaki | 6.5 | 4.0 | Niigata Prefecture Route 23 west – to National Route 352, Miyagawa | Southern end of Niigata Prefecture Route 23 concurrency |
| Kashiwazaki | 7.0 | 4.3 | Niigata Prefecture Route 369 south | |
| Kashiwazaki | 7.5 | 4.7 | Niigata Prefecture Route 574 north – Raihai Station | |
| Kashiwazaki | 7.9 | 4.9 | Niigata Prefecture Route 23 east – to Hokuriku Expressway | Northern end of Niigata Prefecture Route 23 concurrency |
| Kashiwazaki | 9.0 | 5.6 | Niigata Prefecture Route 393 – Shiiya, Nagaoka, Ishiji Beach | |
| Kashiwazaki | 12.6 | 7.8 | Niigata Prefecture Route 48 – Nagaoka, Ishiji Beach | Interchange |
| Izumozaki | 16.8 | 10.4 | Niigata Prefecture Route 336 west | |
| Izumozaki | 18.7 | 11.6 | National Route 352 – to Hokuriku Expressway, Nagaoka, Mishima, Roadside station "Tenryo no Sato", Izumozaki Beach | |
| Izumozaki | 20.8 | 12.9 | Niigata Prefecture Route 193 – Inohana Beach | |
| Nagaoka | 23.8 | 14.8 | Niigata Prefecture Route 574 south | Southern end of Niigata Prefecture Route 574 concurrency |
| Nagaoka | 24.0 | 14.9 | Niigata Prefecture Route 192 – Teradomari Beach, Yoita | |
| Nagaoka | 25.1 | 15.6 | Niigata Prefecture Route 574 north – Shimazaki | Northern end of Niigata Prefecture Route 574 concurrency |
| Nagaoka | 27.7 | 17.2 | Niigata Prefecture Route 169 – Teradomari Port, Nagaoka, Washima Branch Office | |
| Nagaoka | 29.4 | 18.3 | Niigata Prefecture Route 574 – to Hokuriku Expressway, Yoita, Kirihara Station | Interchange |
| Nagaoka | 30.8 | 19.1 | Niigata Prefecture Route 574 south – Teradomari Port | |
| Nagaoka | 33.4 | 20.8 | Niigata Prefecture Route 22 – Teradomari Port, Nagaoka, Yoita, Echigonanaura Seaside Line | |
| Nagaoka | 34.1 | 21.2 | Niigata Prefecture Route 549 | Interchange |
| Tsubame | 35.0 | 21.7 | Niigata Prefecture Route 374 north – Bunsui Station | Interchange |
| Tsubame | 35.6 | 22.1 | Niigata Prefecture Route 18 – Jizōdoō, Sanjō | |
| Tsubame | 40.0 | 24.9 | Niigata Prefecture Route 68 west | Southern end of Niigata Prefecture Route 68 concurrency |
| Tsubame | 40.9 | 25.4 | Niigata Prefecture Route 68 east – Sanjō | Northern end of Niigata Prefecture Route 68 concurrency |
| Tsubame | 43.4 | 27.0 | National Route 289 east – to Hokuriku Expressway, Sanjō Niigata Prefecture Route 29 west – Seaside Line, Yahiko | Southern end of National Route 289 concurrency |
| Tsubame | 44.8 | 27.8 | Niigata Prefecture Route 250 – Iwamuro, Tsukigata, Nakanokuchi | |
| Niigata | 48.3 | 30.0 | Niigata Prefecture Route 55 – Iwamuro, Kamo, Nakanokuchi | |
| Niigata | 51.2 | 31.8 | National Route 460 (Suwagi Bypass) – to Hokuriku Expressway, National Route 8, National Route 402, Shirone, Iwamuro Spa, Echigonanaura Seaside Line | |
| Niigata | 51.9 | 32.2 | National Route 460 – Maki Station, Shirone | National Route 460 truck traffic must use the Suwagi Bypass |
| Niigata | 53.0 | 32.9 | Niigata Prefecture Route 380 – to National Route 402, Seaside Line, Endo | |
| Niigata | 56.8 | 35.3 | Niigata Prefecture Route 66 – Sone, Yokodo, Hataya Industrial Estate | |
| Niigata | 58.2 | 36.2 | Niigata Prefecture Route 46 – to Hokuriku Expressway, Sone, Nishikawa 1st Industrial Center | |
| Niigata | 59.2 | 36.8 | Niigata Prefecture Route 46 west – Sakata, Akatsuka | |
| Niigata | 60.2 | 37.4 | Niigata Prefecture Route 374 south – Hokonoki | |
| Niigata | 69.6 | 43.2 | Hokuriku Expressway – to Nihonkai-Tōhoku Expressway, Kan-etsu Expressway, Ban-etsu Expressway, Toyama, Tokyo, Aizuwakamatsu, Murakami | Niigata-nishi Interchange (E8 exit 41) |
| Niigata | 71.2 | 44.2 | National Route 8 / National Route 17 – to National Route 7, National Route 49, Nagaoka, Sanjō, Aizuwakamatsu, Murakami, Shibata | Kurosaki Interchange |
| Niigata | 71.8 | 44.6 | Niigata Prefecture Route 42 north – Aoyama | |
| Niigata | 72.5 | 45.0 | Niigata Prefecture Route 1 south – Sanjō, Kosudo | Southern end of Niigata Prefecture Route 1 concurrency |
| Niigata | 74.1 | 46.0 | Niigata Prefecture Route 51 east – Niigata Station | |
| Niigata | 74.8 | 46.5 | Niigata Prefecture Route 1 north – Niigata Station, Sado Sea Line Niigata Prefecture Route 16 east – to Ban-etsu Expressway, National Route 8 | Northern end of Niigata Prefecture Route 1 concurrency, southern end of Niigata Prefecture Route 16 concurrency |
| Niigata | 75.5 | 46.9 | Niigata Prefecture Route 16 east – to National Route 8 | Northern end of Niigata Prefecture Route 16 concurrency |
| Niigata | 75.8 | 47.1 | National Route 402 south – Kashiwazaki, Maki | Southern end of National Route 402 concurrency |
| Niigata | 77.8 | 48.3 | Niigata Prefecture Route 164 – to National Route 8, Prefecture Office, Ground Stadium | |
| Niigata | 78.9 | 49.0 | National Route 7 north / National Route 8 south / National Route 17 south / National Route 113 east / National Route 289 ends / National Route 350 west / National Route 402 ends – Bandai Bridge, Niigata Station | Northern terminus, highway continues north as National Route 7, northern end of concurrency with National Route 289 and 402 |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus Incomplete access Route transition |||||