Ōminato Line

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The Ōminato Line (大湊線, Ōminato-sen) is a railway line operated by East Japan Railway Company (JR East). It connects Noheji Station and Ōminato Station on the Shimokita Peninsula in eastern Aomori Prefecture.[1]

Ōminato Line
A KiHa 100 series DMU at Ominato Station on a Shimokita rapid service in October 2009
Overview
Native name大湊線
StatusIn operation
OwnerEast Japan Railway Company
LocaleAomori Prefecture
Termini
Stations11
Service
TypeHeavy rail
Operator(s)East Japan Railway Company
Rolling stockKiHa 100 series DMU
History
Opened1921
Technical
Line length58.4 km (36.3 mi)
Number of tracksEntire line single tracked
CharacterRural
Track gauge3 ft 6 in (1,067 mm)
ElectrificationNone
Operating speed85 km/h (53 mph)
Route map

km
58.4
Ōminato
55.5
Shimokita
narrow gauge line
to Tanabu-Yanagicho
53.2
Akagawa
47.7
Kanayasawa
42.7
Chikagawa
36.0
Arihata
30.1
Mutsu-Yokohama
23.0
Fukkoshi
9.6
Arito
2.8
Kita-Noheji
0.0
Noheji

Station list

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Station Japanese Distance (km) Rapid
Shimokita
Transfers Location
Between
stations
Total
Noheji 野辺地 - 0.0 Aoimori Railway Line Noheji Aomori
Kita-Noheji 北野辺地 2.8 2.8  
Arito 有戸 6.3 9.6  
Fukkoshi 吹越 13.4 23.0   Yokohama
Mutsu-Yokohama 陸奥横浜 7.1 30.1  
Arihata 有畑 5.9 36.0  
Chikagawa 近川 6.7 42.7   Mutsu
Kanayasawa 金谷沢 5.0 47.7  
Akagawa 赤川 5.5 53.2  
Shimokita 下北 2.3 55.4  
Ōminato 大湊 2.9 58.4  
●: All rapid service trains stop, ○: Some rapid service trains stop

History

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On March 20, 1921, the Ōminato Light Railway (大湊軽便線, Ōminato-keibensen) began operations between Noheji Station and Mutsu-Yokohama Station. The line was extended to its present terminus of Ōminato Station by September 25, 1921. In 1922 the line was nationalised, and renamed the Ōminato Line of the Japanese Government Railway (JGR, later JNR).

Express Natsudomari operations began from Aomori Station on a seasonal basis in 1968. The express was later downgraded to rapid service and renamed the Usori, and later the Shimokita. All freight operations ceased on February 1, 1984. With the dissolution and privatization of the JNR on April 1, 1984, the line came under the control of the East Japan Railway Company. On December 4, 1999, a new centralized traffic control (CTC) system became operational. In 2002, seasonal excursion train Kirakira Michinoku operations commenced and a limited number of Shimokita trains were extended to terminate at Hachinohe Station instead of Noheji. The Shimokita service operates a daily round trip to Aomori and 3 round trips to Hachinohe in conjunction with the Aoimori Railway.[2]

The Tōhoku Main Line, including Noheji was transferred from JR East to Aoimori Railway on December 4, 2010, following the extension of the Tohoku Shinkansen from Hachinohe to Shin-Aomori.[3] This resulted in the isolation of the Ōminato Line, a branch of the Tōhoku Main Line, from the rest of the JR East network with the exception of the Shimokita service from Aomori where it connects with the Ōu Main Line and Tsugaru Line.[4]

Former connecting lines

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  • Akagawa station - The Aomori Prefectural Government operated a 4 km (2.5 mi) 762 mm (2 ft 6 in) gauge line to Tanabu-Yanagicho between 1921 and 1941.
  • Shimokita station - The 18 km Ōhata Line [ja] opened in 1939, and construction continued toward Ōma to service a proposed naval base to protect the Tsugaru Strait, and was well advanced when work was suspended in 1943 due to a shortage of materials. The Seikan Tunnel was originally proposed to utilise the roadbed of the uncompleted Ōma Line [ja] (as well as that of the uncompleted Toi Line [ja] near Hakodate) but in 1968 the route was changed to the alignment subsequently built. Freight services ceased on the Ōhata Line in 1979, and operation of it was transferred to Shimokita Koutsu [ja] in 1985. The line closed in 2001.

References

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This article incorporates material from the corresponding article in the Japanese Wikipedia.

  • JTB Timetable December 2010 issue
  1. ^ "Ominato Timetable". www.jreast.co.jp.
  2. ^ "Rapid (Ominato - Noheji - Aomori)". www.jreast.co.jp.
  3. ^ Tetsudo Hobidas: "JR東日本 東北本線八戸―青森間の廃止を届出 " (November 27, 2009). Retrieved February 7, 2018. (in Japanese)
  4. ^ "乗務40年近く・沖津さん 大湊線の存続願う/野辺地~陸奥横浜間・20日で開業100周年" [Nearly 40 years of service, Mr. Okizu wishes for the continuation of the Ōminato Line / between Noheji and Mutsu-Yokohama, 100th anniversary of its opening in 20 days] (in Japanese). Yahoo! News Japan. 19 March 2021. Retrieved 24 March 2021.
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