Seto-Ōhashi Line

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Kibi Line

Okayama

Tsuyama Line

Sanyo Shinkansen

Sanyo/Hakubi Line

Sanyo/Ako Line

Uno Line

(Seto-Ōhashi Line)

Chayamachi

Uno Line

Honshi-Bisan Line

(Seto-Ōhashi Line)

Uno

Great Seto Bridge

(Seto-Ōhashi)

Train ferry

(1910-1988)

Seto Inland Sea

Utazu

Yosan Line

(Seto-Ōhashi Line)

Yosan Line

Sakaide

Takamatsu

Kōtoku Line

The Seto-Ōhashi Line (瀬戸大橋線, Seto-Ōhashi-sen) is a railway line operated by West Japan Railway Company (JR West) and Shikoku Railway Company (JR Shikoku) in Japan which links Okayama Station in Okayama Prefecture with Takamatsu Station in Kagawa Prefecture via the Great Seto Bridge. It is not a distinct railway line, but an official nickname given to a composite line formed of three different lines. Service commenced along with the opening of the Great Seto Bridge in 1988.

• Operators, lines:
  • Total distance: 71.8 km
  • JR West (Services and tracks)
    • Uno Line ¹: Okayama — Chayamachi, 14.9 km
    • Honshi-Bisan Line: Chayamachi — Kojima, 12.9 km
  • JR Shikoku (Services and tracks)
    • Honshi-Bisan Line: Kojima — Utazu, 18.1 km
    • Yosan Line ¹: Utazu — Sakaide — Takamatsu 25.9 km
  • JR Freight (Services)
    • Uno Line ¹: Okayama — Chayamachi, 14.9 km
    • Honshi-Bisan Line: Chayamachi — Kojima — Utazu, 31.0 km
    • Yosan Line ¹: Utazu — Sakaide — Takamatsu 25.9 km

¹: Only the portions of these lines are called Seto-Ōhashi Line.

• Gauge: 1,067 mm (3 ft 6 in)
• Stations: 22
• Track:
  • Double: Chayamachi — Takamatsu
  • Single: the remainder
• Electrification: 1,500 V DC
• Railway signalling: Automatic

As a link between Honshu and Shikoku, the line has many limited express trains, including the Shiokaze, Nanpū, Uzushio, and Sunrise Seto. There are also rapid trains such as the Sun Port and Marine Liner.

The segment operated by JR West (Okayama — Kojima) accepts ICOCA, a smart card ticketing system.

SK: Shiokaze

NP: Nampū

US: Uzushio

SS: Sunrise Seto

ML: Rapid Marine Liner

SP: Rapid Sun Port

All trains stop at stations marked "●" and pass stations marked "-". Some trains stop at "▲" and few trains stop at △.

Operator	Line	Station			Distance (km)	SK	NP	US	SS	ML	SP	Transfers	Location
JR West	Uno Line	M01	Okayama	岡山	0.0	●	●	●	●	●		Sanyō Shinkansen Sanyō Main Line Tsuyama Line Kibi Line (Momotaro Line) Okaden: ■ Higashiyama Line ■ Seikibashi Line (Both at Okayama-Ekimae)	Kita-ku, Okayama	Okayama
		M02	Ōmoto	大元	2.5	-	-	-	-	△
		M03	Bizen-Nishiichi	備前西市	4.5	-	-	-	-	△			Minami-ku, Okayama
		M04	Senoo	妹尾	8.3	-	-	-	-	▲
		M05	Bitchū-Mishima	備中箕島	10.2	-	-	-	-	-
		M06	Hayashima	早島	11.9	-	-	-	-	▲			Hayashima
		M07	Kuguhara	久々原	13.2	-	-	-	-	-
		M08	Chayamachi	茶屋町	14.9	-	-	-	-	●		Uno Line (L08, Southward)	Kurashiki
	Honshi-Bisan Line
		M09	Uematsu	植松	17.8	-	-	-	-	△			Minami-ku, Okayama
		M10	Kimi	木見	20.5	-	-	-	-	△			Kurashiki
		M11	Kaminochō	上の町	24.6	-	-	-	-	△
		M12	Kojima	児島	27.8	●	●	●	●	●
JR Shikoku
		(Great Seto Bridge)
		Y09	Utazu	宇多津	45.9	●	●	●			●	■ Yosan Line (Westward)	Utazu	Kagawa
	Yosan Line
		Y08	Sakaide	坂出	50.5			-	●	●	●		Sakaide
		Y07	Yasoba	八十場	53.2			-	-	-	-
		Y06	Kamogawa	鴨川	55.2			-	-	△	△
		Y05	Sanuki-Fuchū	讃岐府中	57.6			-	-	-	-
		Y04	Kokubu	国分	59.9			-	-	△	△		Takamatsu
		Y03	Hashioka	端岡	62.3			-	-	△	●
		Y02	Kinashi	鬼無	65.7			-	-	△	△
			Takamatsu Freight Terminal	高松貨物ターミナル	67.1			-	-	-	-
		Y01	Kōzai	香西	68.4			-	-	-	-
		Y00	Takamatsu	高松	71.8			●	●	●	●	■ Kōtoku Line (T28) Kotoden Kotohira Line (Takamatsu-Chikkō)

• List of railway lines in Japan
• Tsugaru-Kaikyō Line

Wikimedia Commons has media related to Seto-Ōhashi Line.

• JR Shikoku official website (in Japanese)
• JR West official website (in Japanese)