Marine Drive walkway gets a makeover as visitors trickle in Updated: Updated: GCDA to expand capacity of STP to end odour on the waterfront Share Article AAA A fresh coat of paint is being applied over Rainbow Bridge at Marine Drive, as the walkway renovated by CSML is set for commissioning. | Photo Credit: Vibhu H. GCDA to expand capacity of STP to end odour on the waterfront Visitors have begun trickling in to the Marine Drive walkway with the ₹7.85-crore renovation works of the 2.20-km facility nearing completion and the three iconic bridges on the stretch being given a fresh coat of paint.