Is it safe to cross a bridge during a flash flood?

Swift Water Dangers

Flash floods can quickly render a bridge impassable due to powerful currents that can exceed 10 miles per hour. Swift water can sweep away vehicles, and even well-built bridges can be compromised by the sheer force of the water. If you’re caught on a bridge during a flash flood, your best chance of survival is to stay in your vehicle with the doors closed and wait for help to arrive.

Bridge Failure Risks

Bridges are designed to withstand normal water flows, but flash floods can put excessive stress on the structure, especially if the water is rising rapidly. A bridge can fail due to erosion of the foundation, collapse of the deck, or failure of the supporting piers. If you’re trying to cross a bridge during a flash flood, it’s essential to be aware of the warning signs, such as crumbling pavement, loose railings, or debris in the water.

High Ground Safety

If you’re in a situation where you need to cross a flooded area, look for a safe route to high ground, such as a hill or an elevated road. This can be a better option than attempting to cross a bridge, especially if you’re not familiar with the area or the floodwaters are rapidly rising. When searching for high ground, be aware of potential hazards like fast-moving water, strong currents, and slippery surfaces.