The Western Freeway was a proposed controlled-access highway in Mumbai, India that would stretch from Marine Drive in South Mumbai to Kandivli in the north, a distance of 29 km. The project envisioned the construction of four major sea links over the Arabian Sea along Mumbai's western coastline to reduce traffic-congestion between the Western Suburbs and South Mumbai.

The first sea link, known as the Bandra–Worli Sea Link, was completed in June 2009, and connects Bandra in the north and Worli in the south with a cable-stayed bridge spanning the Mahim Bay. This development relieved congestion on the Mahim Causeway, which until then had been the only road between the Western Suburbs and South Mumbai on the western sea front. The second sea bridge, the Versova–Bandra Sea Link, is currently under construction and is expected to be completed by 2027.

In 2011, the Coastal Road was proposed as a lower-cost alternative to the Western Freeway. The 8-lane, 29.2-km long Coastal Road would run along Mumbai's western coastline connecting Marine Lines to Kandivali. The Coastal Road connects Marine Lines with the Worli end of the Bandra–Worli Sea Link through roads built on reclaimed land and tunnels rendering the proposed Haji Ali–Nariman Point Sea Link and Worli-Haji Ali Sea Link of the Western Freeway redundant. Construction of a 9.98 km section of the Coastal Road between Marine Lines and Worli began in 2018 and is expected to be completed by 2023.

This section would have been an extension of the sea-link from Haji Ali to Priyadarshini Park, and onward to Malabar Hill. The section was sub-divided into the following:

On 16 April 2013, Chief Minister Prithviraj Chavan told the state Assembly that the Nariman Point–Haji Ali sea link was "impractical". Chavan stated, "As far as the sea link is concerned, the consultant had ruled out the possibility of taking it further than Haji Ali. We will look at other alternatives." Chavan also said that he would promote a coastal road as an alternative to the sea link.

This section is the immediate extension of the Bandra–Worli Sea Link further into the heart of Mumbai city. The current design allows for a clover leaf junction at Khan Abdul Ghaffar Khan Marg (at Worli) for ramp up of traffic onto the sea link. This includes twin carriageway of 3.315 km termed as main line and connectors at Worli and Haji Ali. While mainline is to be made of entirely precast segmental spans, the connectors will be made of segmental and I beams. A 10-lane toll plaza is proposed at the start of the section at Worli.

The Bandra-Worli Sea Link was opened to traffic on 30 June 2009. The Sea Link reduces travel time between Bandra and Worli from 45 to 60 minutes to 7 minutes. The link has an average daily traffic of around 37,500 vehicles per day. The toll charged is ₹70 (73¢ US) for one-way and ₹105 (US$1.10) for a return journey.

There are plans to add an 800 m bridge to turn the Worli connector from a 4-lane to 8-lane freeway.