Osaka Metro Yotsubashi Line
A refurbished Yotsubashi Line 23 series
Overview
Status	Operational
Owner	Osaka Metro (2018–present) Osaka Municipal Transportation Bureau (1942–2018)
Line number	3
Locale	Osaka, Japan
Termini	Nishi-Umeda Suminoekōen
Stations	11
Color on map	Ocean blue (#0078BE)
Service
Type	Rapid transit
System	Osaka Metro
Depot(s)	Midorigi
Rolling stock	23 series EMUs
History
Opened	10 May 1942; 82 years ago (1942-05-10)
Last extension	9 November 1972; 52 years ago (1972-11-09)
Technical
Line length	11.4 km (7.1 mi)
Track length	11.8 km (7.3 mi)
Number of tracks	Double-track
Track gauge	1,435 mm (4 ft 8+1⁄2 in)standard gauge
Electrification	750 V DC (third rail)
Operating speed	70 km/h (43 mph)
Signalling	Automatic closed block
Train protection system	WS-ATC
Route map

v t e Yotsubashi Line
Legend
Midosuji Line Shin-Osaka Hankyū Takarazuka Main Line Hankyū Kobe Main Line Jūsō Yodo River Umeda Freight Line Kita-Umeda Tōkaidō Main LineKyoto LineKobe Line Takarazuka LineOsaka Loop Line Umeda Hanshin Main Line 0.0 Nishi-Umeda Kitashinchi JRTōzai Line Dōjima River Watanabebashi Keihan Nakanoshima Line Tosabori River 1.3 Higobashi Midōsuji Line 2.2 Hommachi Chūō Line toChūō Line Nagahori Tsurumi-ryokuchi Line Shinsaibashi 3.2 Yotsubashi Sennichimae Line Ōsaka Namba Kintetsu Namba Line &Hanshin Namba Line 4.1 Namba 5.3 Daikokuchō Osaka Loop Line & Kansai Main Line (Yamatoji Line) Midōsuji Line 6.6 Hanazonochō 7.7 Kishinosato 9.0 Tamade 10.1 Kitakagaya Midorigi Depot 11.8 Suminoekōen km

TheOsaka Metro Yotsubashi Line (四つ橋線,Yotsubashi-sen) is an undergroundrapid transit line inOsaka, Japan, operated byOsaka Metro. The line connects Umeda, Hommachi, Yotsubashi, Namba, Daikokuchō and Suminoe, and runs parallel to theMidōsuji Line from Daikokuchō to Nishi-Umeda. Despite being the system's second line to open, its official name isRapid Electric Tramway Line No. 3 (高速電気軌道第3号線), while theOsaka Municipal Transportation Bureau refers to it asOsaka City Rapid Railway Line No. 3 (大阪市高速鉄道第3号線), and inMinistry of Land, Infrastructure and Transport publications, it is written asLine No. 3 (Yotsubashi Line) (3号線（四つ橋線）). Station numbers are indicated by the letterY.^[1]

This sectiondoes notcite anysources. Please helpimprove this section byadding citations to reliable sources. Unsourced material may be challenged andremoved.(November 2023) (Learn how and when to remove this message)

The Yotsubashi Line runs in a north and south direction. connecting theOsaka Metro Nankō Port Town Line atSuminoekōen Station. At first, it was a branch of theOsaka Metro Midōsuji Line, branching off atDaikokuchō Station but was extended north toNishi-Umeda Station and made a separate line. This new section of the Yotsubashi Line takes a more direct routing to Nishi-Umeda running only 300–400 m (0.19–0.25 mi) west of the Midosuji Line.

• 10 May 1942 – Daikokuchō – Hanazonochō (opening)
• Construction stopped duringWorld War II.
• 1 June 1956 – Hanazonochō – Kishinosato (opening)
• 31 May 1958 – Kishinosato – Tamade (opening)
• 1 October 1965 – Daikokuchō – Nishi-Umeda (opening)
• 9 November 1972 – Tamade – Suminoekōen (opening)

Anorthward extension [ja] toJūsō Station (with optional extension toShin-Ōsaka Station) has been proposed since 1989.^[2]

This sectiondoes notcite anysources. Please helpimprove this section byadding citations to reliable sources. Unsourced material may be challenged andremoved.(November 2023) (Learn how and when to remove this message)

Most trains are operated between Nishi-Umeda station and Suminoe-Koen Station, with 2–3 minute interval during the morning rush hour, 6–7½ minute interval during the day, 3–4 minute intervals at the afternoon, 5–10 minute interval at night, and 10 minute interval in the early morning and late night. During the morning and evening (afternoon on weekends only), there are trains that only run between Kita-Kagaya station and Nishi Umeda Station, as Kita-Kagaya is connected to the Yotsubashi Line depot at Midorigi.

In addition, on the day of the Suminoe boat race at night (excluding Sundays), one special train operates between 9pm and 10pm.

It is connected with the New-Tram at Suminoe-Koen station.

On 23 March 2013, the Osaka Bureau of Transport revised the timetable for the Yotsubashi Line. By using the train that was a going to a depot without any passengers, the final train became 0:20am for the northbound and 0:10am (for Suminoe-Koen) and 0:36am (for Kita-Kagaya) for the southbound. And because of passenger demand, for weekdays between 10am and 12pm was changed from 5 minute to 6 minute interval and for weekends and on holidays between 10am and 3pm was changed from 5-6 minute interval to 7-7½ minute interval.

Since 2016, the regular inspection of the trains used on the third rail lines of Osaka Metro has been consolidated at Midorigi Depot, therefore trains of the Midosuji Line, Tanimachi Line, Chuo Line, and the Sennichimae Line may run on the Yotsubashi Line.

All stations are in Osaka.

No.	Distance (km)	Station	Japanese	Connections	Location
Y 11	0.0	Nishi-Umeda	西梅田	Midōsuji Line (Umeda, M16) Tanimachi Line (Higashi-Umeda, T20) AJR Kyōto Line – (Tōkaidō Main Line,Ōsaka) AJR Kōbe Line – (Tōkaidō Main Line, Ōsaka) GJR Takarazuka Line – (Tōkaidō Main Line, Ōsaka) FOsaka Higashi Line – (Ōsaka) OOsaka Loop Line – (Ōsaka) HJR Tōzai Line – (Kitashinchi) Hankyu Railway Kobe Line Takarazuka Line Kyoto Line Hanshin Railway:Main Line	Kita-ku
Y 12	0.9	Higobashi	肥後橋	Keihan Nakanoshima Line –Watanabebashi	Nishi-ku
Y 13	1.9	Hommachi	本町	Chūō Line (C16) Midōsuji Line (M18)
Y 14	2.9	Yotsubashi	四ツ橋	Nagahori Tsurumi-ryokuchi Line –Shinsaibashi (N15) Midōsuji Line -Shinsaibashi (M19)
Y 15	3.7	Namba	難波・なんば	Sennichimae Line (S16) Midōsuji Line (M20) Nankai Railway: Nankai Main Line Kōya Line AKintetsu Namba Line Hanshin:Hanshin Namba Line QYamatoji Line (Kansai Line)	Naniwa-ku
Y 16	4.9	Daikokuchō	大国町	Midōsuji Line
Y 17	6.2	Hanazonochō	花園町		Nishinari-ku
Y 18	7.3	Kishinosato	岸里
Y 19	8.6	Tamade	玉出
Y 20	9.7	Kitakagaya	北加賀屋		Suminoe-ku
Y 21	11.4	Suminoekōen	住之江公園	Nankō Port Town Line (P18)

This sectiondoes notcite anysources. Please helpimprove this section byadding citations to reliable sources. Unsourced material may be challenged andremoved.(November 2023) (Learn how and when to remove this message)

• 23 series (since 1990)

All trains are based at Midorigi Depot. Since 1996, all trains are 6 cars long but subway platforms are long enough to accommodate trains up to 8 cars long.

• 400 series (1942–1969)
• 1000 series (1956–1971)
• 1100 series (1958–1979)
• 1200 series (1958–1980)
• 50 series (1960–1980)
• 30 series (1972–1996)

• List of railway electrification systems in Japan

Wikimedia Commons has media related toYotsubashi Line.

• Osaka Metro
• Rail transport in Osaka Prefecture
• Railway lines opened in 1942
• Standard-gauge railways in Japan
• 1942 establishments in Japan
• 750 V DC railway electrification

• CS1 uses Japanese-language script (ja)
• CS1 Japanese-language sources (ja)
• Articles with short description
• Short description is different from Wikidata
• Articles containing Japanese-language text
• Articles needing additional references from November 2023
• All articles needing additional references
• Commons category link is on Wikidata