Paper Title
Study of Sustainable Options of Superstructure of Navigational Bridges on Major Rivers

Inland waterways are one of the oldest mode of transportation between large cities which are build near rivers. These waterway are considered as a existing highways made by nature itself. Many countries recognizes this potential of inland waterways, that inland waterways important way of transportation and developed it for public as well as commercial purpose. Hence ,Government of Indian is also planning to develop inland waterways as they are most efficient , produces very low pollution , and requires very less amount of budget as compare to construction of highways or expressways , But one of major problem is that in development of these national waterways are the bridges which build on these waterways need to designed such that they allow crossing of cargo as well domestic ships underneath them. For that Indian Waterway Authority of Indian provided some guidelines for the vertical clearance between H.F.L and bottom of the bridge superstructure and horizontal clearances between two piers .In this study we considered that the stretch of NW1 from Prayagraj to Barhi.e build on river Ganga. In this stretch the average depth of river 2m according to EIA report for national waterways, may 2016. Hence as per IWAI regulation ,2006 section4 we provided 50 m span of truss bridge and 50 m span of pre- stressed box girder bridge and compare them on the basis of the cost of construction. From the study, it can be concluded that the Box girder bridges are more economical than truss Bridge and but it can be seen that the depth of the beam required is less in case of truss bridges, which leads to increase the vertical clearance of truss bridges. Keywords - EIA, National Waterways, Box-Girder, Truss Bridge, IWAI Introduction