Mumbai Metro Line 3 route links six business districts through 27 stations

Mumbai Metro Rail Corporation's official project facts describe Metro Line 3 as a 33.5-kilometre corridor running through the Colaba-Bandra-SEEPZ axis. The project is designed around 27 stations, of which 26 are underground and one is at grade. That makes the line different from a short neighbourhood connector: its stated route links several parts of South Mumbai, central business districts and the western suburbs through one continuous project.

The official list of connected business districts includes Cuffe Parade, Bandra-Kurla Complex, Colaba, MIDC, Worli and SEEPZ. The same project description says the corridor is intended to connect 30 educational institutes, 30 recreational facilities and both domestic and international airport terminals. Those descriptions explain why the line matters beyond the station entrances themselves. Its planned role is to connect places where people work, study, travel and spend leisure time without requiring every journey to depend on road traffic.

MMRC's facts page also describes the project as a combination of tunnels and underground stations. It says tunnel boring machines are being used for tunnelling, while station construction can use cut-and-cover methods, the New Austrian Tunnelling Method or a combination of the two. The page presents these methods as responses to the engineering challenge of building a large rail corridor below a dense city. It does not turn that description into a promise about journey times, so commuters should check the official passenger information for current service details rather than infer timings from the project overview.

The line's design notes include several passenger-facing features. Stations are described as having escalators and lifts, while platform screen doors are included for passenger safety. The project facts also list automatic fare collection, contactless smart-card facilities, air-conditioned stations and trains, first-aid rooms, wheelchair provision for senior citizens and passengers with disabilities, and centralised train operations. These are design and facility descriptions from the project page; availability at a particular station should still be checked before travelling.

For Mumbai residents, the most useful way to read the official route information is as a map of connections rather than a claim about every individual commute. The six business districts, airport links, educational destinations and recreational facilities give the corridor a broad city role. The official page also says the system is planned as an electricity-driven railway with regenerative braking. There is no substitute for checking the live station and service information, but the project facts show the scale and intended coverage of the Aqua Line 3 corridor.