North Rias Line

Kita-Rias Line
A train arriving at Shiraikaigan Station in May 2008
Overview
Native name	北リアス線
Locale	Iwate Prefecture
Termini	Miyako Kuji
Stations	16
Operation
Owner	Sanriku Railway
Technical
Line length	71.0 km (44.1 mi)
Number of tracks	Single track
Track gauge	1,067 mm (3 ft 6 in)
Electrification	none

Minami-Rias Line
A train arriving at Sakari Station in July 2014
Overview
Native name	南リアス線
Locale	Iwate Prefecture
Termini	Sakari Kamaishi
Stations	10
Operation
Owner	Sanriku Railway
Technical
Line length	36.6 km (22.7 mi)
Number of tracks	Single track
Track gauge	1,067 mm (3 ft 6 in)
Electrification	none

The Sanriku Railway (三陸鉄道, Sanriku Tetsudō^?) is a railway company in Iwate Prefecture in northern Japan. The company and its lines are also known as Santetsu (三鉄^?). The company was founded in 1981, as the first "third sector" (half public, half private) railway line in the country, excluding special cases such as freight railways in seaports. Its lines are former Japanese National Railways (JNR) lines, that were going to be closed. Santetsu acquired these lines in 1984. The company also operates a travel agency and other businesses.

The Japanese National Railways (JNR) opened the Miyako to Taro section in 1972 and the Kuji to Fudai section in 1975. It constructed the Taro to Fudai section, and transferred the entire line to Sanriku on the day it opened in 1984. The line features 42 tunnels, including the Masaki (6,532 m) and Omoto (5,174 m) tunnels, both opened in 1984.

JNR opened the Sakari to Ryori section in 1970, extending the line to Yoshihama in 1973. It constructed the section to Kamaishi and transferred the entire line to Sanriku on the day it opened in 1984. The line features 20 tunnels.

Both lines were heavily damaged by the 2011 Tōhoku earthquake and tsunami. The two lines suffered damage at 300 locations, including damage to station buildings and bridges. The tsunami washed away 5.8 km of railway tracks on the lines. Full restoration of service on the lines was completed in April 2014.

Diesel railcars damaged by the earthquake and tsunami were replaced by three new diesel railcars funded by Kuwait. The new cars were introduced in January 2014.