The following is present situation:
.
Mumbai CST-Pune: Double and electrified.
Pune-Daund-Bhigwan: Already doubled
Bhigwan to Mohol: Doubling in Progress
Mohol-Solapur-Hotgi:...
more... Double
Hotgi to Gulbarga: Doubling in Progress
Gulbarga to Guntakal: Double
Guntakal-Anantapur-Katpadi: Double electrified
Katpadi to Chennai: Double electrified