The is a national expressway in Japan. It is owned and operated by

East Nippon Expressway Company The , abbreviated as , is one of the main operators of expressways and toll roads in Japan. It is headquartered in Kasumigaseki, Chiyoda, Tokyo. The company was established on October 1, 2005 as a result of the privatization of Japan Highway P ...

Naming

is a

kanji are the logographic Chinese characters taken from the Chinese script and used in the writing of Japanese. They were made a major part of the Japanese writing system during the time of Old Japanese and are still used, along with the subse ...

acronym An acronym is a word or name formed from the initial components of a longer name or phrase. Acronyms are usually formed from the initial letters of words, as in '' NATO'' (''North Atlantic Treaty Organization''), but sometimes use syllables, a ...

consisting of 3 characters, each representing the former names of the prefectures that the route traverses. consists of present-day

Gunma Prefecture is a prefecture of Japan located in the Kantō region of Honshu. Gunma Prefecture has a population of 1,937,626 (1 October 2019) and has a geographic area of 6,362 km2 (2,456 sq mi). Gunma Prefecture borders Niigata Prefecture and Fukushim ...

, consists of present-day

Nagano Prefecture is a landlocked prefecture of Japan located in the Chūbu region of Honshū. Nagano Prefecture has a population of 2,052,493 () and has a geographic area of . Nagano Prefecture borders Niigata Prefecture to the north, Gunma Prefecture to the n ...

, and consists of present-day

Niigata Prefecture is a prefecture in the Chūbu region of Honshu of Japan. Niigata Prefecture has a population of 2,227,496 (1 July 2019) and is the fifth-largest prefecture of Japan by geographic area at . Niigata Prefecture borders Toyama Prefecture and N ...

. Officially, the expressway is referred to as the Kan-Etsu Expressway Jōetsu Route. This designation consists of the entire Jōshin-etsu Expressway as well as the

Kan-Etsu Expressway The is a national expressway in Japan. It is owned and managed by East Nippon Expressway Company. Naming is the ''kanji'' acronym of and the old comprising modern-day Niigata Prefecture. Officially, the Kan-Etsu consists of two routes. Both ...

beyond Fujioka Junction to Nerima Interchange (concurrent with the Kan-Etsu Expressway Niigata Route).

Route description

The expressway begins at a junction with the Kan-Etsu Expressway in southern Gunma Prefecture and heads west, paralleling National Route 254 until Shimonita. From here the route branches north, passing

Mount Myōgi is one of the major mountains in Gunma Prefecture, Japan. Its straddles the border between the municipalities of Annaka, Shimonita and Tomioka. Well known for its rocks weathered into fantastic forms, this famous peak is ranked among Japan's t ...

, then heads west once more from

Annaka 240px, Edo-period Usui Magistrate’s office in Annaka is a city located in Gunma Prefecture, Japan. , the city had an estimated population of 47,911 in 24,749 households, and a population density of 210 persons per km². The total area of the ...

. The route parallels National Route 18 from this point until the terminus. The expressway then follows a winding route through the mountainous area separating Gunma and Nagano Prefectures. From

Saku, Nagano is a city located in Nagano Prefecture, Japan. , the city had an estimated population of 99,131 in 41,522 households, and a population density of 230 persons per km². The total area of the city is . Geography Saku is located in east-central ...

the route follows a northwesterly course, passing

Mount Asama is an active complex volcano in central Honshū, the main island of Japan. The volcano is the most active on Honshū. The Japan Meteorological Agency classifies Mount Asama as rank A. It stands above sea level on the border of Gunma and Nagan ...

, until it reaches a junction with the Nagano Expressway near the city of Nagano. The route then heads north, following the east bank of the

Chikuma River The , known as the in its upper reaches, is the longest and widest river in Japan and the third largest by basin area (behind the Tone River and Ishikari River). It is located in northeastern Honshu, rising in the Japanese Alps and flowing ...

, before heading into the mountainous region separating Nagano and Niigata Prefectures. The expressway continues north through Niigata Prefecture, passing

Mount Myōkō is an active stratovolcano in Honshu, Japan. It is situated at the southwest of Myōkō city, Niigata Prefecture, and a part of Jōshin'etsu-kōgen National Park. Mount Myōkō is listed as one of 100 Famous Japanese Mountains, and together ...

, and eventually terminating at a junction with the

Hokuriku Expressway The , (abbreviated as , is a 4-laned national Expressways of Japan, expressway in Japan. It is owned and managed by East Nippon Expressway Company and Central Nippon Expressway Company. Overview The first section was opened in 1972 by Japan ...

in Jōetsu near the

Japan Sea The Sea of Japan is the marginal sea between the Japanese archipelago, Sakhalin, the Korean Peninsula, and the mainland of the Russian Far East. The Japanese archipelago separates the sea from the Pacific Ocean. Like the Mediterranean Sea, it h ...

coastline. The expressway is 6 lanes from Fujioka Junction to

Fujioka Interchange Fujioka may refer to: * Fujioka, Aichi, a former town located in Nishikamo District, Aichi, Japan * Fujioka, Gunma, a city in Gunma, Japan *Fujioka, Tochigi was a town located in Shimotsuga District, Tochigi Prefecture, Japan. As of 2003, the t ...

. The remaining section from Fujioka Interchange to Jōetsu Junction is 4 lanes, from 5 December 2019 according to E-NEXCO.

History

The first section was completed in 1980 and the entire route was completed in 1999. On the night of 16 December 2020, about 300 vehicles were trapped on the expressway after a truck blocked it off due to it becoming stuck in the snow. In response, the company that manages the route supplied drivers who were stuck on the road until the next morning.

List of interchanges and features

* IC -

interchange Interchange may refer to: Transport * Interchange (road), a collection of ramps, exits, and entrances between two or more highways * Interchange (freight rail), the transfer of freight cars between railroad companies * Interchange station, a rai ...

, SIC -

smart interchange A is a feature of Japanese expressways that provides exclusive access to and from the expressway for vehicles equipped with electronic toll collection (ETC). The feature increases accessibility to and from the expressway in less-populated areas w ...

, JCT -

junction Junction may refer to: Arts and entertainment * ''Junction'' (film), a 2012 American film * Jjunction, a 2002 Indian film * Junction (album), a 1976 album by Andrew Cyrille * Junction (EP), by Basement Jaxx, 2002 * Junction (manga), or ''Hot ...

, SA - service area, PA -

parking area A parking lot (American English) or car park (British English), also known as a car lot, is a cleared area intended for parking vehicles. The term usually refers to an area dedicated only for parking, with a durable or semi-durable surface ...

, BS - bus stop, CB -

snow chains Snow chains, or tire chains, are devices fitted to the tires of vehicles to provide increased traction when driving through snow and ice. Snow chains attach to the drive wheels of a vehicle or special systems deploy chains which swing under ...

, TN -

tunnel A tunnel is an underground passageway, dug through surrounding soil, earth or rock, and enclosed except for the entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube cons ...

, BR -

bridge A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually somethi ...

There are also 2 snow chain changing areas between Toyota-Iiyama Interchange and Kurohime-Nojiriko Parking Area, and 1 area between Sakaki Interchange and Ueda-Sugadaira Interchange (Fujioka-bound only).

References

External links

East Nippon Expressway Company

{{DEFAULTSORT:Joshin-etsu Expressways in Japan Roads in Gunma Prefecture Roads in Nagano Prefecture Roads in Niigata Prefecture