Padma Multipurpose Bridge Project

Figure 2-9: Typical cross-section of approach road.34. Culverts on approach road at Janjira side: A total of 14 culverts are proposed to offsethydrological impacts and ensure road sustainability. Of the culverts, two have three cells each of3mx3m and the remaining twelve have single cell of same dimension.35. Road junctions and underpasses on approach road at Janjira side: Eleven road-junctions havebeen designed for the intersection with national, regional, subdivision and rural roads to give a fullrange of vehicle turning movements. The crossing point through the median is restricted for use byemergency services, maintenance crews and vehicles whose loads exceed the headroom height ofthe underpass. Seven underpasses for rural roads are proposed as single cell structures of 4m width.All rural roads carry a reasonable amount of pedestrian traffic.36. Service roads: In addition, service roads are provided along the full length on the side of theapproach roads to facilitate movement of local traffic. The width of service roads is 3.5m with suitableprovision made in the design to allow future widening up to 5.5m.2.3.4 Bridge-end-Facilities37. Different BEF is recommended in the design to provide maximum benefits to the user and theoperator.2.3.4.1 Toll plaza on both sides and spare toll plaza at Janjira side38. Total plot area of the toll plaza in Mawa side is about 17.5ha. Total area of the toll plaza inJanjira side is about 4.78ha. There will be 6 toll gates in each side with a total area of 72m 2 . There willbe a two-storied office building with amenities, one operation and fire station building, one policestation and one weigh bridge station. In addition, there will be a spare toll plaza at Janjira side. Thiswill have office, accommodation and a small laboratory and at early construction stage will be used forthe mobilization of construction supervision staff. The site will be further developed for an emergencyresponse station to ensure proper handling of the accidents and disasters on the bridge of any nature.In future this will be equipped with necessary emergency equipments.2.3.4.2 Service Area39. At Mawa side a service area will be built of 27.03ha and in Janjira side the area is 63.7ha. Eachservice area will have offices for consultants and BBA, laboratory, houses for engineers, singleaccommodation for engineers, sports areas and associated facilities during construction. Both serviceareas will be designed to have police station, restaurant, food court, shops and kiosks, mosque, visitorcenter and observation tower, visitor parking, staff parking, electrical substations, consultants and BBAproject office, control and maintenance office, club house/entertainment precinct, medical clinic, seniorstaff houses, senior staff accommodation, engineers house, single engineers accommodation, andjunior staff house. Layout plan of Janjira service area is presented in Figure 2-10.2.3.4.3 Construction Yards40. Two construction yards (one at Mawa side 81 ha and the other at Janjira side, 78ha) are requiredfor providing contractors with the necessary lands for carrying out construction works and storage ofconstruction materials. Sites for construction yards identified during the feasibility stage are not usableanymore. At detailed design stage of the project it is evaluated that site at Mawa side is not conducive2-15