[2] According to IRFCA, "The viaduct is situated in a steep valley nestling in the midst of hills that skirt around it in the tunnels and then is carried across the yawning chasm on a tall imposing structure… Some of the viaducts and tunnels on this line are considered outstanding achievements in Civil Engineering and are among the finest works in the world.

[4] The first train in India traveled from Chhatrapati Shivaji Terminus railway station in Mumbai, then known as Boribunder, to Thane on 16 April 1853.

[9] The 1,676 mm (5 ft 6 in) Manmad–Daund line was opened in 1878 and connects the two main sections (the south-east and north east) of GIPR.

[10][11] The Hyderabad–Godavari Valley Railways opened the 1,000 mm (3 ft 3+3⁄8 in) metre gauge Manmad–Secunderabad line (not shown in the route chart) in 1900.

[7] The 17.5 km (11 mi)-long 1,676 mm (5 ft 6 in)-wide broad-gauge Puntamba-Shirdi link, connecting Shirdi to the Manmad–Daund branch line was completed in 2009.

[14] Indian Railways have cleared the construction of Manmad–Indore and Nashik–Pune new lines after sixteen years of active lobbying.

[19] Subsequent electrification with 25 kV AC overhead system in the Igatpuri–Manmad sector, with AC/DC change over at Igatpuri, was carried out in 1967–69.

[20] The change over of mainlines in the Mumbai area from DC to AC traction was completed in June 2015.