Question 1

What is the Orange Gate-Marine Drive tunnel and what does it connect?

Accepted Answer

It is an underground twin-tunnel road project connecting the Eastern Freeway at Orange Gate to Marine Drive near Churchgate, designed to cut travel time between the two points to around five minutes.

Question 2

Is MMRDA planning to realign this tunnel, and why?

Accepted Answer

Yes, reportedly. Following strong objections from Marine Drive residents concerned about heritage building safety and construction disruption, MMRDA is considering alternative alignments including routes near the Oval Maidan and outside the NCPA.

Question 3

How many buildings and heritage structures does the tunnel pass beneath?

Accepted Answer

The alignment runs beneath nearly 700 buildings, including over a hundred heritage structures, at depths ranging from 12 to 52 metres.

Question 4

When is the project expected to be completed?

Accepted Answer

MMRDA's target completion date is December 2028, with the southbound tunnel expected to reach Marine Drive by December 2027.

Question 5

Does this project require land acquisition on the surface?

Accepted Answer

Largely no, since the tunnel runs underground, but the two portal areas at Orange Gate and near Marine Drive/Churchgate involve surface-level construction and alignment decisions that remain under active review.

Question 6

Has there been a legal dispute over building heights in the Marine Drive Precinct before?

Accepted Answer

Yes. Residents previously filed a Public Interest Litigation in the Bombay High Court challenging a BMC proposal to double building heights in the precinct, citing heritage preservation and Mumbai's UNESCO nomination bid.

Question 7

What is the project's cost and who is constructing it?

Accepted Answer

Estimated at approximately Rs 8,056 crore (with some reports citing Rs 7,765 crore or Rs 77.56 billion), the project is being executed by MMRDA with contractors including Larsen & Toubro's Heavy Civil Infrastructure business.

Question 8

How will this tunnel improve connectivity to Navi Mumbai International Airport?

Accepted Answer

By linking the Eastern Freeway to the Coastal Road and Atal Setu via Marine Drive, the tunnel is expected to provide faster east-west access for commuters travelling toward Navi Mumbai International Airport.

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