The 4-lane, 4.3 km flyover between Garden Reach and Majerhat, over the Diamond Harbour Road decongests port traffic on the road and reduces travel time by about 45 minutes. An innovation was the introduction monolithic-designed piers with integrated deck slab to economize on cost, the usage of reinforcement steel couplers to minimize scrap and the use of a combination of reinforced earth and concrete retaining walls.
The several innovative construction methods used in this flyover are as below.