Fabrication And Educational Application of a Hydraulic Bridge Model for Integrating Road and Water Transport

This project report describes the design, fabrication, and educational application of a hydraulic bridge model intended to demonstrate the principles of fluid pressure, mechanical advantage, and applied physics in secondary school learning environments. The hydraulic bridge model was developed as a practical exhibition project to support competency‑based learning and to illustrate how physics concepts can be used to solve real community transport problems (Pereira et al., 2025). The model represents a situation where an industrial area and a market center are separated by a river, requiring both road transport across the river and water transport beneath the bridge. The model operates on Pascal's principle, utilizing a syringe-based hydraulic system to actuate a bascule-style lifting mechanism, thereby allowing simulated waterborne traffic to pass while maintaining road connectivity when closed (Spencer Group, 2018). The fabrication process employs low-cost, accessible materials including syringes, tubing, and craft components to create a working prototype that visually represents the engineering principles underlying real-world movable bridges, such as the Maryport Articulated Bridge which employs hydraulic operation with counterweight assistance for pedestrian and cycle access (Kashmir Monitor, 2022). The hydraulic bridge model, constructed from simple materials such as syringes, plastic tubing, and craft sticks, serves as a tangible demonstration of Pascal's Law and the transmission of pressure through confined fluids. By integrating principles of road and water transport infrastructure, this model bridges theoretical physics concepts with real-world engineering applications.

Hydraulic bridge model, Pascal's Law, pressure education, STEM learning

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