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|Length||204.9 km (127.3 mi)|
|From|| Kan-etsu Expressway|
Fujioka Junction in Fujioka, Gunma
|To|| Hokuriku Expressway|
Jōetsu Junction in Jōetsu, Niigata
|Major cities||Tomioka, Annaka, Saku, Komoro, Ueda, Chikuma, Nagano, Nakano, Myōkō|
|National highways of Japan|
Expressways of Japan
Jōshin-etsu (上信越) is a kanji acronym consisting of 3 characters, each representing the former names of the prefectures that the route traverses. Kōzuke Province (上野国) consists of present-day Gunma Prefecture, Shinano Province (信濃国) consists of present-day Nagano Prefecture, and Echigo Province (越後国) consists of present-day Niigata Prefecture.
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 beyond Fujioka Junction to Nerima Interchange (concurrent with the Kan-Etsu Expressway Niigata Route).
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, then heads west once more from Annaka. 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 the route follows a northwesterly course, passing Mount Asama, 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, before heading into the mountainous region separating Nagano and Niigata Prefectures. The expressway continues north through Niigata Prefecture, passing Mount Myōkō, and eventually terminating at a junction with the Hokuriku Expressway in Jōetsu near the Japan Sea coastline.
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 featuresEdit
- IC - interchange, SIC - smart interchange, JCT - junction, SA - service area, PA - parking area, BS - bus stop, CB - snow chains, TN - tunnel, BR - bridge
|Bus Stop||Notes||Speed Limit||Location|
|(9)||Fujioka JCT||Kan-etsu Expressway||0.0||204.9||80 km/h||Fujioka||Gunma|
|1/PA||Fujioka IC/PA||Pref. Route 13 (Maebashi Nagatoro Route)||1.8||203.1||Parking Area/Highway Oasis only accessible to Fujioka JCT-bound traffic|
|2||Yoshii IC||Pref. Route 41 (Kanda Yoshii Teishajō Route)||11.2||193.7||Takasaki|
|4||Shimonita IC||National Route 254||26.8||178.1||○||Shimonita|
|Pref. Route 51 (Matsuida Shimonita Route)||37.5||167.4||○||Annaka|
|TN||Takaiwayama Tunnel||↓||↑||Fujioka-bound 1,019m|
|6||Usui-Karuizawa IC||Pref. Route 92 (Matsuida Karuizawa Route)||52.5||152.4||○|
|CB||Usui Chain Base||↓||↑|
|TN||Ōyama Tunnel||↓||↑||Fujioka-bound 1,722m|
|TN||Nikkureyama Tunnel||↓||↑||Fujioka-bound 2,314m|
|TN||Takatachi Tunnel||↓||↑||Fujioka-bound 373m|
|TN||Happūzan Tunnel||↓||↑||Fujioka-bound 3,998m|
|CB||Kōsaka Chain Base||↓||↑|
|TN||Akarusan Tunnel||↓||↑||Fujioka-bound 1,703m|
|7||Saku IC||Pref. Route 9 (Saku Karuizawa Route)||71.3||133.6||○|
|7-1||Saku-Komoro JCT||Chūbu-Ōdan Expressway||72.8||132.1||Komoro|
|8||Komoro IC||Pref. Route 79 (Komoro Ueda Route)||82.1||122.8|
|9/SA||Tōbu-Yunomaru IC/SA||Pref. Route 81 (Maruko Tōbu Inter Route)||88.6||116.3||○||Tōmi|
|10||Ueda-Sugadaira IC||National Route 144||96.9||108.0||○||Ueda|
|TN||Tarōyama Tunnel||↓||↑||Fujioka-bound 4,264m|
|11||Sakaki IC||Pref. Route 91 (Sakaki Inter Route)||104.8||100.1|
|TN||Gorigamine Tunnel||↓||↑||Fujioka-bound 4,518m|
|TN||Mori Tunnel||↓||↑||Fujioka-bound 1,421m|
|12||Kōshoku JCT||Nagano Expressway||119.1||85.8|
|TN||Yakushiyama Tunnel||↓||↑||Fujioka-bound 1,212m|
|13||Nagano IC||Pref. Route 35 (Nagano Sanada Route)||125.1||79.8||○|
|14||Suzaka-Naganohigashi IC||National Route 403||135.0||69.9|
|Pref. Route 343 (Murayama Obuse Teishajō Route)||141.6||63.3||Highway Oasis||Obuse|
|15||Shinshū-Nakano IC||Pref. Route 29 (Nakano Toyono Route)||146.5||58.4||Nakano|
|BR||Kita-Chikumagawa Bridge||↓||↑||Length - 370m|
Chikuma River crossing
|CB||Kaesa Chain Base||↓||↑|
|16||Toyota-Iiyama IC||National Route 117||154.2||50.7|
|TN||Samizu Tunnel||↓||↑||Fujioka-bound 1,415m
|TN||Yakushidake Tunnel||↓||↑||Fujioka-bound 2,320m|
|17||Shinanomachi IC||National Route 18 (Nojiri Bypass)||167.4||37.5|
|BR||Reimei Bridge||↓||↑||Length - 370m|
Seki River crossing
|18||Myōkōkōgen IC|| National Route 18 (Myōkō Nojiri Bypass)
Pref. Route 187 (Ikenotaira Myōkōkōgen Route)
|BS||Myōkōkōgen BS||↓||↑||X||Bus Stop closed|
|SA||Myōkō SA||179.9||25.0||X||Bus Stop closed|
|19||Nakagō IC||National Route 18 (Jōshin Bypass)||184.5||20.4||Jōetsu|
|BS||Nakagō-kita BS||↓||↑||X||Bus Stop closed|
|Pref. Route 428 (Nishinoyashinden Arai Route)||191.9||13.0||X||Highway Oasis
Bus Stop closed
|TN||Kannondaira Tunnel||↓||↑||Length - 1,502m|
|20||Jōetsu-Takada IC||Pref. Route 85 (Jōetsu-Takada Inter Route)||199.0||5.9||Jōetsu|
|(31-1)||Jōetsu JCT||Hokuriku Expressway||204.9||0.0|
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).
- Ministry of Land, Infrastructure and Transport, Kanto Regional Development Bureau. "Road Timetable". Archived from the original on 5 April 2008. Retrieved 16 April 2008.CS1 maint: multiple names: authors list (link)
- "Expressway Opening Dates". Retrieved 16 April 2008.
- Ministry of Land, Infrastructure and Transport. "High Standard Trunk Road Map" (PDF). Archived from the original (pdf) on 20 September 2011. Retrieved 2008-04-13.
- "E-NEXCO Opening Schedule". Retrieved 15 April 2008.
- Japan Civil Engineering Contractors Association. "Construction History of Japan, 1999". Archived from the original on 16 February 2007. Retrieved 16 April 2008.
- Kyodo (17 December 2020). "Thousand vehicles stranded, 10,000 without electricity after heavy snowfall". The Japan Times. Retrieved 18 December 2020.
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