Japan National Route 18

{{short description|National highway in Japan}} {{Use dmy dates|date=February 2020}} {{Infobox road | country = JPN | type = National | route = 18 | alternate_name = | maint = | map = {{Maplink2|frame=yes|plain=yes|frame-align=center|frame-height=300|type=line|stroke-width=2}} | map_custom = yes | length_km = 193.9 | length_round = | length_ref = <ref>{{cite web|title=一般国道の路線別、都道府県別道路現況|trans-title=Road statistics by General National Highway route and prefecture|url=http://www.mlit.go.jp/road/ir/ir-data/tokei-nen/2016/pdf/d_genkyou26.pdf|language=ja|publisher=Ministry of Land, Infrastructure, Transport and Tourism|access-date=19 February 2020}}</ref> | established = 4 December 1952 | direction_a = North | terminus_a = {{jct|country=JPN|Route|8|Route|350}} in Jōetsu | junction = | direction_b = South | terminus_b = {{jct|country=JPN|Route|17}} in Takasaki | previous_type = Route | previous_route = 17 | next_type = Route | next_route = 19 | browse = | photo = Route 18 Nagano BP outbound, Yanagihara, Nagano.jpg }}

{{nihongo|'''National Route 18'''|国道18号|Kokudō jūhachi-gō}} is a national highway connecting Takasaki and Joetsu, Niigata in Japan.<ref>{{cite web |script-title=ja:一般国道１８号 |url=http://www.ktr.mlit.go.jp/honkyoku/road/jikoku/station/r018.html |publisher=Ministry of Land, Infrastructure, Transport and Tourism. Kanto Regional Development Bureau. |access-date=29 November 2010 |language=ja |url-status=dead |archive-url=https://web.archive.org/web/20110928103702/http://www.ktr.mlit.go.jp/honkyoku/road/jikoku/station/r018.html |archive-date=28 September 2011 }}</ref> A section of the highway is designated as a part of the Japan Romantic Road.<ref name="guide">{{cite web|title=Japan Romantic Road|url=https://www.japan-guide.com/e/e7450.html#section_main_content|publisher=japan-guide.com|date=13 May 2020|accessdate=18 February 2021}}</ref>

==Route data== *Length: 193.9 km (120.5 mi) *Origin: Takasaki (originates at junction with National Route 17) *Terminus: Jōetsu, Niigata (ends at Junction with National Route 8 and National Route 350) *Major cities: Komoro, Ueda, Chikuma, Nagano

==History== *4 December 1952 - First Class National Highway 18 (from Takasaki to Joetsu) *1 April 1965 - General National Highway 18 (from Takasaki to Joetsu)

==Municipalities passed through== *Gunma Prefecture **Takasaki - Annaka *Nagano Prefecture **Karuizawa - Miyota - Komoro - Tomi - Ueda - Sakaki - Chikuma - Nagano - Obuse - Nagano - Iizuna - Shinano *Niigata Prefecture **Myōkō - Jōetsu - Myōkō - Jōetsu

==Intersects with== {{RJL|date=November 2021}} *Gunma Prefecture **Routes 17, 354 and 406; at Takasaki City *Nagano Prefecture **Route 146; at Karuizawa Town **Route 141; at Komoro City - Ueda City **Routes 143, 144 and 152; at Ueda City ** Route 403; at Chikuma City ** Routes 19, 117 and 406; at Nagano City * Niigata Prefecture ** Route 292; at Myoko City ** Route 405; at Joetsu City ** Routes 8 and 350; at the terminus in Joetsu City

==Bypasses== Among other sections already finished, a bypass running on the west side of the Chikuma River from the extreme southern part of Nagano City to Ueda is currently under construction. As of 2008, only a small amount of sections of this bypass has been completed. The completed sections are in Ueda, just west of the Chikuma River, and in Chikuma from Inariyama to just south of Yawata.

==References== {{Reflist}}

018 Category:Roads in Gunma Prefecture Category:Roads in Nagano Prefecture Category:Roads in Niigata Prefecture Category:1952 establishments in Japan