Hydraulic bridges represent an advanced class of movable bridge systems that facilitate both roadway transportation and marine navigation. Among the various hydraulic bridge configurations, the bascule bridge remains one of the most widely adopted solutions due to its operational efficiency and structural reliability. The present study investigates the structural and hydraulic performance of a movable hydraulic bridge modeled on the iconic Tower Bridge, London. The research evaluates the historical development, design principles, hydraulic operating mechanisms, load distribution characteristics, construction methodology, and operational efficiency of a modern hydraulic bridge system. Structural analysis was performed considering dead load, live load, wind load, and seismic effects in accordance with Indian Standards and IRC provisions. Hydraulic system design parameters including cylinder force requirements, operating pressure, flow characteristics, and power demand were analyzed to determine system adequacy. The study further examines the integration of programmable logic controllers (PLC), supervisory control and data acquisition

(SCADA) systems, and sensor-based monitoring technologies for improved operational safety and reliability. Results indicate that hydraulic bascule bridges provide an effective solution for locations where uninterrupted waterway navigation and roadway connectivity are simultaneously required. The adoption of electro-hydraulic actuation systems significantly enhances operational efficiency while reducing maintenance requirements. The findings demonstrate the suitability of hydraulic bridge technology for future infrastructure projects in India, particularly in navigable waterways and coastal development corridors.

Keywords— Hydraulic Bridge, Tower Bridge, Bascule Bridge, Structural Analysis, Hydraulic Cylinder, PLC Control, SCADA, Bridge Engineering.