One set of girders are at the end and another set in the middle, which are braced by girders spaced on an average at centre to centre. A deck crane was used for the construction of the main span of the bridge. A specially designed crane of 45 tonne capacity was used to erect the pylons of the bridge. The structural steel used in the bridge weighs about 13,200 tonnes. The pylons, which are in height, are designed as free standing portals. They are provided with two cross portal members, one at the bottom and another at the top, below the pylon head. The deck is connected to the end piers by bolts embedded in the chambers of the piers. Pylons made of steel boxes of riveted construction were raised on the two side spans of the bridge; one set is on the Calcutta side and the other is on the Howrah side. The six pylons on the Calcutta side of the bridge were installed using 75 MT and 50 MT cranes, while on the Howrah end, a single 50 MT crane was used. Anchorage of the pylon with the base of piers was effected through Dywidag rods, duly anchored in the piers. Cables were erected from the four pylon heads with the help of 32 MT hoist frames. The hoist frames were mounted on top of each pylon. Sheave blocks, winches and snatch blocks were used to facilitate the lifting, and cables inside the pylons were stressed with jacks. Pressure grouting was performed to fill the voids between the wire and the high-density polyethylene (HDPE) tubes. A two tonne tower crane, fixed inside the pylons, lifted the cables into position. The bridge has been subject to prototype wind tunnel tests at the Indian Institute of Science in Bangalore. Bearings are used in vertical and horizontal directions, with grouted collars in four segments at the two end piers and horizontal bearings at the two middle piers to achieve stability against lateral movement. Maurer Söhne expansion joints were provided to allow for horizontal expansion at the free ends. Fixed end slab seal type expansion joints were used for horizontal expansion of the joints. Other essential components provided in the bridge structure are the handrails, lightning arresters, crash barriers, gas service support structures, telephone and electric lines, lifts in the pylons, and a maintenance gantry. Over the years, several accidents have occurred on the bridge resulting in traffic congestion, and sometimes closure of the bridge for a few hours.