Sōtetsu–JR Link Line

Sōtetsu–JR Link Line
Sōtetsu–JR Link Line
	Sotetsu 12000 series and E233-7000 series in 2019
Overview
Native name	相鉄・JR直通線
Status	Operational
Owner	JRTT; Sagami Railway; JR East;
Locale	Tokyo, Kanagawa prefectures
Termini	Shinjuku; Ebina;
Stations	18
Service
Depot(s)	Kashiwadai (Sotetsu); Kawagoe (JR East);
History
Opened	30 November 2019; 6 years ago
Technical
Line length	57 km (35 mi)
Track gauge	1,067 mm (3 ft 6 in)
Electrification	1,500 V DC overhead catenary
Operating speed	120 km/h (75 mph)
Route map
Route map
	Legend
	JR Kawagoe Line
	to Komagawa
	Utsunomiya Line
	Tōhoku Main Line
	Saikyō Line
	(Akabane Line)
	Shōnan–Shinjuku Line
	Yamanote Freight Line
	Yamanote
	Freight Line
	Tōkaidō Main Line
	(Hinkaku Line)
	to Shin-yokohama
	(since March 2023)
	Shōnan–Shinjuku Line,
	Yokosuka Line
	Hazawa
	yokohama-kokudai
	Sōtetsu Shin-
	Yokohama Line
	Sōtetsu Main Line
	to Yokohama
	Sōtetsu Izumino Line
	to Shōnandai
	Key to symbols
	This diagram: view; talk; edit;

The Sōtetsu–JR Link Line (Japanese: 相鉄・JR直通線, Hepburn: Sōtetsu JR Chokutsū-sen) is a section of the Eastern Kanagawa Rail Link project which connects the Sōtetsu Main Line to the JR East Saikyō Line via the tracks of the Sōtetsu Shin-Yokohama Line and the Tōkaidō Freight Line. It was constructed and is owned by the Japan Railway Construction, Transport and Technology Agency (JRTT). The service and operations are publicly described as Through service to Sōtetsu Line (相鉄線直通, Sōtetsu Chokutsū-sen) by JR East_,^[1]^[2]^[3]^[4] and as Thru to JR Line (JR線直数運転, JR-sen Chokutsū Unten) by Sagami Railway (Sotetsu).^[5]^[6]^[7]

History

Past proposals

Past proposals also suggested Sōtetsu trains operate through services with the Ueno-Tokyo Line, towards the Utsunomiya, Takasaki and Jōban Lines. This would have required trains to cross over level junctions to enter the Tōkaido Line tracks near Tsurumi or Shinagawa (or somewhere in between), which would have possibly undermined the high-density train operations in this section, if no dedicated grade separation were to be built. Thus, the idea was scrapped due to these difficulties.

Services

JR through service trains enter the Tōkaido Freight Line once leaving Hazawa Yokohama-Kokudai Station, via the Tokyo side of Yokohama-Hazawa Freight Station, then enter the Yokosuka Line tracks near Tsurumi Station. The service shares the same route as the Shōnan–Shinjuku Line, heading inbound towards Musashi-Kosugi, Ōsaki, Shibuya, and Shinjuku.

Trains operate from Ebina on the Sōtetsu Main Line via Nishiya and Musashi-Kosugi, and enter the Saikyō Line at Ōsaki. Trains generally terminate at Shinjuku. During the morning rush hour, some trains go further north towards Musashi-Urawa, Ōmiya, Sashiōgi (where the Kawagoe Line depot is located), and as far as Kawagoe. A total of 46 round trips are operated every day, with a rush hour frequency of 4 trains per hour, and off-peak frequency of 2–3 trains per hour.^[8]

The fastest travel times are 44 minutes between Futamatagawa and Shinjuku, 45 minutes between Yamato and Shibuya, and 36 minutes between Ebina and Musashi-Kosugi.^[8]

Service types

Local (各停), stopping at all stations
Limited Express (特急), stopping at all stations on the JR lines.
- However, when Limited Express trains are on the JR line, they are displayed as Local instead.

Nomenclature

		Ebina Station	Hazawa yokohama-kokudai Station	Tsurumi Station	Shin-Tsurumi Signal Station	Shinjuku Station
Line name in passenger info	→	Through service to JR Saikyo Line		Through service to Saikyo (Kawagoe) Line		Saikyo (Kawagoe) Line
Line name in passenger info	←	Sotetsu Lines		Through service to Sotetsu Lines		Through service to Saikyo Line Sotetsu Line
Official route name		Sotetsu Main Line	Sotetsu Shin-Yokohama Line	Tōkaidō Main Line		Yamanote Line
Track name		Sotetsu Main Line	Sotetsu Shin-Yokohama Line	Tokaido Freight Line	Hinkaku Line	Yamanote Freight Line

Station list

Company	Line name	No.	Station	Japanese	Transfers	Location
Through service to Ōmiya, Kawagoe on Saikyō Line and ■ Kawagoe Line
JR East	Yamanote Line	SJKJA11	Shinjuku	新宿	Yamanote Line (JY17) Chūō Line (JC05) Chūō–Sōbu Line (JB10) Saikyō Line (JA11; for Itabashi & Ōmiya) Shōnan–Shinjuku Line (JS20; for Utsunomiya/Takasaki) Keiō Line/Keio New Line (KO01) Odawara Line (OH01) Shinjuku Line (Seibu-Shinjuku: SS01) Marunouchi Line (M-08) Shinjuku Line (S-01) Ōedo Line (E-27, Shinjuku-Nishiguchi: E-01)	Shinjuku	Tokyo
		SJKJA11	Shinjuku	新宿		Shibuya
		SBYJA10	Shibuya	渋谷	Yamanote Line (JY20) Shōnan–Shinjuku Line (JS19) Tōyoko Line (TY01) Den-en-toshi Line (DT01) Inokashira Line (IN01) Ginza Line (G-01) Hanzōmon Line (Z-01) Fukutoshin Line (F-16)
		EBSJA09	Ebisu	恵比寿	Yamanote Line (JY21) Shōnan–Shinjuku Line (JS18) Hibiya Line (H-02)
		OSKJS17JA08	Ōsaki	大崎	Yamanote Line (JY24) Shōnan–Shinjuku Line (JS17) Rinkai Line (R-08)	Shinagawa
	Tōkaidō Main Line	JS16	Nishi-Ōi	西大井	Yokosuka Line (JO16; for Shinagawa) Shōnan–Shinjuku Line (JS16)	Shinagawa
		MKGJS15	Musashi-Kosugi	武蔵小杉	Yokosuka Line (JO15; for Yokohama & Zushi) Shōnan–Shinjuku Line (JS15; for Yokohama & Zushi/Odawara) Nambu Line (JN07) Tōyoko Line (TY11) Meguro Line (MG11)	Nakahara-ku, Kawasaki	Kanagawa
			Hazawa Yokohama-Kokudai	羽沢横浜国大	Sōtetsu Shin-Yokohama Line (SO51; for Shin-Yokohama)	Kanagawa-ku, Yokohama
Sagami Railway (Sotetsu)	Sōtetsu Shin-Yokohama Line		Hazawa Yokohama-Kokudai	羽沢横浜国大		Kanagawa-ku, Yokohama
	Sōtetsu Shin-Yokohama Line		Nishiya	西谷	Sōtetsu Main Line (SO08; for Yokohama)	Hodogaya-ku, Yokohama
	Sōtetsu Main Line		Nishiya	西谷	Sōtetsu Main Line (SO08; for Yokohama)	Hodogaya-ku, Yokohama
			Futamatagawa	二俣川	Sōtetsu Izumino Line (SO10)	Asahi-ku, Yokohama
			Yamato	大和	Enoshima Line (OE05)	Yamato
			Ebina	海老名	Odawara Line (OH32) ■ Sagami Line	Ebina

References

↑ "JR東日本：東京近郊路線図（車内掲出版）" (PDF). JR East. 2026-03-14. Retrieved 2026-05-20.
↑ JR East [@JRE_Tokaido_E] (2026-05-20). "The Through service to Sotetsu Line operates as usual. #Through_service_to_Sotetsu_Line" (Tweet). Retrieved 2026-05-20 – via X (formerly Twitter).
↑ （JR線代表的駅構内図）"大崎駅構内図1F". JR East (in Japanese). Retrieved 2021-02-10.
↑ 佐藤利夫 (March 2021). "特集：東京近郊JR路線別ガイド ⑪埼京・川越・相鉄直通線". 鉄道ファン (in Japanese). 61 (3(719)). 交友社: 34–35.
↑ "相鉄線路線図（詳細版）" (PDF). Sagami Railway. Retrieved 2020-05-08.
↑ "Timetable for Yokohama / Yamato, Ebina / Thru to JR Line / Shin-yokohama, Thru to Tōkyū Line" (PDF). Sotetsu Group. 2024-03-01. Retrieved 2026-05-20.
↑ （相鉄線代表的駅構内案内）"西谷（にしや）". Sotetsu Group (in Japanese). Retrieved 2020-05-08.
1 2 "相鉄・ＪＲ直通線の運行計画の概要について" [Regarding the operation summary of the Sotetsu JR Link Line] (PDF). July 16, 2019.

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[JRE_路線図-1] "JR東日本：東京近郊路線図（車内掲出版）" (PDF). JR East. 2026-03-14. Retrieved 2026-05-20.

[2] JR East [@JRE_Tokaido_E] (2026-05-20). "The Through service to Sotetsu Line operates as usual. #Through_service_to_Sotetsu_Line" (Tweet). Retrieved 2026-05-20 – via X (formerly Twitter).

[大崎駅構内図-3] （JR線代表的駅構内図）"大崎駅構内図1F". JR East (in Japanese). Retrieved 2021-02-10.

[RF_719-4] 佐藤利夫 (March 2021). "特集：東京近郊JR路線別ガイド ⑪埼京・川越・相鉄直通線". 鉄道ファン (in Japanese). 61 (3(719)). 交友社: 34–35.

[相鉄線路線図-5] "相鉄線路線図（詳細版）" (PDF). Sagami Railway. Retrieved 2020-05-08.

[6] "Timetable for Yokohama / Yamato, Ebina / Thru to JR Line / Shin-yokohama, Thru to Tōkyū Line" (PDF). Sotetsu Group. 2024-03-01. Retrieved 2026-05-20.

[西谷駅構内案内-7] （相鉄線代表的駅構内案内）"西谷（にしや）". Sotetsu Group (in Japanese). Retrieved 2020-05-08.

[:0-8] 1 2 "相鉄・ＪＲ直通線の運行計画の概要について" [Regarding the operation summary of the Sotetsu JR Link Line] (PDF). July 16, 2019.

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