Excavation and removal of materials under the bridges 1,2,12 & 13 and disposal of excavated materials to a distance of 5 kilometers using an excavator, barge & submersible dredging pumps to a depth of 5.6m. Removing existing sand materials to the required level and installation of geotextile ( 1000 gsm ), Quarry run rock ( 0.5 – 500 kg ), Grade B rock (5 – 40 kg), Grade A rock ( 60 – 300 kg ) for Rock protection works under the bridges 1 & 2.