CIDCO's 25 km corridor and the six months it can't control

At Dhan Nirankari Chowk, near Patni Maidan in Digha, the corridor exists as a line on a drawing. It runs parallel to Thane-Belapur Road for 17 km to Vashi, then becomes a 9 km double-decker that ends inside Navi Mumbai International Airport. Nobody has poured anything.

CIDCO has now floated the tender for all 25 km of it. The number attached since Cabinet approval last year is Rs 6,363 crore, and it is the number that will be quoted back at you in every meeting this quarter. The figure that decides whether the corridor opens this decade is smaller, harder to put in a press release, and held by people CIDCO does not employ: six months, the window it has been given to secure all environmental and statutory approvals.

The airport opened last December. The corridor was sold as 90 minutes becoming 30, and the airport at the end of it is already taking passengers who make the 90-minute version today. Every month the six-month window slips is a month of sixty-minute losses on trips the expressway was meant to carry, multiplied by a demand estimate the announcement does not contain.

It is meant to serve Thane, Kalyan, Dombivli, Ambernath-Badlapur and Bhayandar. The announcement gives none of their numbers: not a trip, not a vehicle, not a rupee of revenue.

Nine kilometres of mangrove

Phase one, Digha to Vashi, has a road to run beside. Phase two is a double-decker over mangrove and coastal regulation zone ground, needing multiple clearances, and it is the phase the announcement itself flags as difficult. The announcement names none of those clearances, the authority granting them, or a date for any of it.

The critical path on this corridor runs through a stamp.

The PPP structure sharpens the exposure. Cabinet authorised CIDCO to acquire land along the corridor for commercial development and to use government land beneath the elevated road at nominal rates. Those terms are what make a bid close, and their value depends entirely on the corridor being finished. A concessionaire pricing against Rs 6,363 crore will price the coastal zone risk into the bid, or decline.

What the announcement leaves out is what a bidder needs first: no bid deadline, no concession period, no toll, no viability gap, no split between state money and private money.

The tender documents will name the authority that clears the mangroves, the sequence its clearances must arrive in, and the specific date phase two hangs on. None of that is in the announcement. Until it is, a concessionaire is being asked to price a Rs 6,363 crore corridor with its hardest 9 km unquantified, and the clock CIDCO was handed in place of a schedule is already running.