The Echigo Railway Co. opened the Hakusan - Kashiwazaki section of the line in 1912, and was nationalised in 1927. In 1951, the Hakusan - Niigata section was opened, CTC signalling was commissioned in 1982, the line was electrified at 1,500 V DC in 1984, and freight services ceased in 1987.
Former connecting lines
Teradomari Station: The Nagaoka Railway Co. opened a 39 km (24 mi) line to Raikoji (on the Shin'etsu Line) between 1915 and 1921. This company introduced Japan's first diesel railcar in 1928, and in 1951 electrified 31 km (19 mi) of the line at 750 V DC in 70 days, completing the balance the following year. Significant typhoon damage occurred in 1966, and in 1972, passenger services ceased between Raikoji and Nishinagaoka, with the entire line becoming freight-only three years later. The line closed in 1995.
Sekiya Station: The Niigata Kotsu Co. opened a 34 km (21 mi) line, electrified at 1,500 V DC, to Tsubame on the Yahiko Line between 1933 and 1934. Freight services ceased in 1982, and the line closed between 1993 and 1999.
Services
Although most services are operated to and from Niigata Station, operations are divided into two sections: Kashiwazaki – Yoshida and Yoshida – Niigata. Some services operate over the entire line and through to Niitsu on the Shinetsu Main Line, Shibata on the Hakushin Line, or Higashi-Sanjō on the Yahiko Line.
Between Kashiwazaki and Yoshida, there is a period of over three hours where no trains operate. Between Niigata and Uchino there are three trains per hour, with another one to two trains per hour to Yoshida.