What to Do When Driving a Motor Vehicle Encountering a Flooded Bridge?
2 Answers
When a motor vehicle passes through a flooded road or bridge, it should stop to assess the water conditions and proceed at a low speed only after confirming safety. The hazards of water entering a car include: 1. Increased engine component wear: A small amount of water entering the engine can mix with the oil in the cylinders, degrading the oil quality. Oil containing water increases wear on engine components, potentially leading to increased engine noise and vibration during future vehicle operation. 2. Bent valves and connecting rods: Since water cannot be compressed, its entry into the cylinders while the engine is operating at high speeds can directly cause the valves and connecting rods to bend, pistons to seize, severe cylinder wear, and crankshaft bending during the power stroke.
I've driven trucks for thirty years and seen all kinds of road conditions, but flooded bridges give me the biggest headache. In such situations, I usually slow down or preferably come to a complete stop to assess the situation. If the water depth is unclear and the current is strong, forcing your way through can lead to water entering the engine, causing it to stall, or the tires losing traction, even getting swept away. I recall once on a rural road after heavy rain, the bridge was completely submerged. I decisively pulled over, turned on the hazard lights, and waited for the current to calm down while observing how others crossed. It's best to find a detour or call for help rather than take risks—after all, lives are at stake. I always recommend learning some basic judgment skills, like avoiding water deeper than the center of your wheel hub, and keeping a navigation device handy to quickly find alternative routes. These small tips can be lifesavers in critical moments.
