Bridges and Overpasses Freeze First, Posing Hazard for Drivers

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Drivers in Leesburg, Florida and other areas may encounter unexpected icy conditions on bridges and overpasses, even when the surrounding roads appear dry. This phenomenon occurs because bridges and elevated roadways lose heat faster than regular pavement, causing them to freeze first before the rest of the road network.

Why it matters

Icy bridges and overpasses pose a serious safety risk for drivers, as the sudden loss of traction can lead to dangerous skids and collisions. Being aware of this weather pattern can help motorists take extra precautions when approaching elevated roadways during cold weather.

The details

Bridges and overpasses freeze before regular roads because they are exposed to cold air on both the top and bottom surfaces, causing them to lose heat more rapidly. The pavement on a bridge or overpass is also thinner than a regular road, making it more susceptible to freezing temperatures. This can result in icy conditions persisting on bridges long after the surrounding roads have thawed.

• The weather phenomenon of bridges and overpasses freezing before regular roads can occur any time temperatures drop below freezing, especially overnight and in the early morning hours.