Tanimachi Line - Overview

Overview

As noted above, the Tanimachi Line is officially "Line No. 2", but it was actually the fourth to open, after Line No. 3 (the Yotsubashi Line) during World War II and Line No. 4 (the Chūō Line) in the early 1960s. The line was opened gradually from the late 1960s to the early 1980s.

Ridership, though less than half the numbers of the Midōsuji Line, is still the second-highest of all lines in the Osaka subway network, thanks to the large number of government buildings in eastern Chūō-ku and schools around Tennōji (total ridership for fiscal year 2009 was approximately 480,000 per day). It is also the second-most profitable subway line in Osaka (total profit for FY 2009 was ¥7.3 billion — a 9.4% increase over the previous year).

The Tanimachi Line has the longest operating distance (for the purpose of fare calculation) in the Osaka subway network, after the Midōsuji Line (although the latter would be the longest in the Osaka subway network if the Kita-Osaka Kyūkō Railway section of the Midōsuji Line was taken into account). It runs completely underground from Dainichi to just before Yaominami, and was known as the longest continuously underground subway line in Japan for a long time after the opening of Yaominami Station (it was also among the longest subway tunnels in the world at the time of its opening). Now, it is fourth in Japan after the Toei Ōedo Line (entire line, 40.7km), Saitama Rapid Railway Line/Tokyo Metro Namboku Line/Tōkyū Meguro Line (Urawa-Misono –Fudōmae via Akabane-Iwabuchi and Meguro, 36.9km), and Nagoya Municipal Subway Meijō Line/Meikō Line (entire line, 32.4km).

If one considers Higashi-Umeda, Umeda, and Nishi-Umeda Stations as the same station (as they are for the purpose of transfers within 30 minutes), the Tanimachi Line has connections to all other subway lines in Osaka. (By comparison, the Chūō Line is the only subway line in Osaka that connects to all other subway lines, as well as the Nankō Port Town Line.)