[3] In 1861 the Great Southern of India Railway (GSIR) built the 125 km (78 mi)-long 5 ft 6 in (1,676 mm) broad gauge line between Nagapattinam and Tiruchirapalli (then known as Trichinopoly) and the line was opened to traffic next year.

After South Indian Railway Company took over GSIR in 1874, the Nagapattinam–Tiruchirapalli line was converted to 1,000 mm (3 ft 3+3⁄8 in)-wide metre gauge in 1875.

[5] The South India Railway Company laid a 715 km (444 mi)-long metre gauge trunk line from Chennai to Tuticorin via Cuddalore, Kumbakonam and Thanjavur in 1880.

101 Madras-Egmore–Dhanushkodi Boat Mail on the platform line of Tanjore Junction, its rear portion bumped against the rear portion of No 112 Tenkasi Passenger which was stationary on the other end of this platform, having arrived earlier.

[10] The Electrification of Tiruchirappalli-Thanjavur-Kumbakonam-Mayiladuthurai section was completed in the end of 2020 and it was commissioned on 14 February 2021.