The Banetsu West Line (磐越西線, Ban'etsu-sai-sen) is a railway line in Japan operated by East Japan Railway Company (JR East). It connects Kōriyama Station in Kōriyama, Fukushima Prefecture, and Niitsu Station in Akiha Ward, Niigata, Niigata Prefecture. The name "Banetsu" is taken from the first characters of the names of the ancient provinces of Iwaki (磐城) and Echigo (越後), which the Banetsu East and Banetsu West lines connect. "Sai" (西) means "west" in Japanese.

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Ban'etsu West Line
Joyful Train SL Ban'etsu Monogatari hauled by C57 crossing the Ichinotogawa River bridge in 2009
Overview
Native name	磐越西線
Status	In operation
Owner	JR East
Locale	Fukushima, Niigata prefectures
Termini	Kōriyama Niitsu
Stations	43
Service
Type	Regional rail
Operator(s)	JR East
Rolling stock	719 series EMU, E721 series EMU, KiHa 100 series DMU, GV-E400 series DMU, AT-700 series DMU
History
Opened	1898
Technical
Line length	175.6 km (109.1 mi)
Number of tracks	Entire line single tracked
Character	Rural
Track gauge	1,067 mm (3 ft 6 in)
Electrification	20 kV AC, 50 Hz overhead catenary (Kōriyama – Kitakata) None (Kitakata - Niitsu)
Operating speed	100 km/h (62 mph)
Route map

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The line's nickname is the Mori to Mizu to Roman no Tetsudō (森と水とロマンの鉄道, lit. "the water, forest, and nostalgia railway").^{[citation needed]}

• Local trains generally stop at all stations, but some trains skip stations marked "▽".
• The column marked "*" refers to the unnamed rapid service between Kōriyama and Aizu-Wakamatsu/Kitakata using 719 series EMUs.
• Trains can pass one another at stations marked "◇", "∨", or "∧"; stations marked "◆" are switchback stations. Trains cannot pass at stations marked "｜".

As of April 2020^[update], the following rolling stock is used on the Banetsu West Line.

The private Ganetsu Railway opened the initial section from Kōriyama to Nakayamajuku on July 26, 1898, and extended the line to Aizu-Wakamatsu the following year.^{[citation needed]}

Japanese National Railways (JNR) started to modernize the line in the 1960s, introducing the line's first limited express service (as a part of the Yamagata-bound Yamabata) in 1965 between Ueno Station in Tokyo and Aizu-Wakamatsu via the Tōhoku Main Line. In 1968 the train was renamed Aizu Yamabata, but from 1993 onward it was renamed Viva Aizu and ran only between Koriyama and Aizu-Wakamatsu. The train was finally discontinued as a limited express service in 2003.^{[citation needed]}

In 1967, JNR electrified the section between Kōriyama and Kitakata at 20 kV AC.^{[citation needed]}

In 2011 the line was closed for 15 days in March following the Tohoku earthquake, two days in April as a result of aftershocks, and for 10 weeks following torrential rain at the end of July.^{[citation needed]}

A new station, called Kōriyamatomita, opened on 1 April 2017 between and Kōriyama and Kikuta stations.^[4]

The railway bridge connecting Kitakata and Yamato collapsed due to heavy rain on 4 August 2022. All services are suspended between Kitakata and Nozawa.^[5]

• Aizu Liner
• Banetsu Monogatari