The Jōban Line (常磐線 Jōban-sen) is a railway line in Japan operated by East Japan Railway Company (JR East). It begins at Nippori Station in Taitō, Tokyo and approximately parallels the Pacific coasts of Chiba, Ibaraki, and Fukushima Prefectures before the line officially ends at Iwanuma Station in Iwanuma, Miyagi. However, most trains originate at Ueno rather than Nippori; likewise, many trains continue past Iwanuma onto the Tōhoku Main Line tracks to Sendai.
The name "Jōban" is derived from the names of the former provinces of Hitachi (常陸) and Iwaki (磐城), which the line connects to Tokyo.
The section of the Joban Line between Tatsuta and Namie, which extends through the exclusion zone surrounding the Fukushima Daiichi nuclear meltdown, remains closed in the wake of the 2011 Tōhoku earthquake and tsunami and Fukushima Daiichi nuclear disaster, and is expected to reopen in March 2020. The reconstructed segment between Hamayoshida and Sōma was reopened on 10 December 2016, prior to which services had been provided by an interim bus service. JR East is currently inspecting the segment between Namie and Odaka in preparation for the surrounding areas being cleared for re-settlement. The service between Tomioka and Odaka is provided by a bus service. Train services between Namie and Odaka resumed on 1 April 2017. Train services between Tatsuta and Tomioka resumed on 21 October 2017.
On March 14, 2015, the line was extended to Tokyo Station via the Ueno-Tokyo Line, with services starting and terminating at Shinagawa Station.
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