INDIA : LONGEST

Longest Canal - Indira Gandhi canal
Longest River - Ganga
Longest Tunnel - Kharbude (Konkan Railway)
Longest Dam - Hirakud (Orissa)
Longest National Highway- N.H. 7
Longest Railway platform - Kharagpur (West Bengal)
Longest Corridor - Rameswaram Temple corridor
Longest Hanging bridge - Howra bridge
Longest Train Service - Himasagar express
Longest Bridge - Anna Indira(Rameswaram to Mandap)
Longest Glacier - Siachen Glacier
Longest River bridge - Mahatma Gandhi Sethu