2. Material Failure: Poor-quality materials or defects in construction materials can cause bridge elements to weaken and fail.
3. Overloading: Bridges have a specific weight-carrying capacity. Exceeding this limit due to heavy traffic, oversized loads, or natural disasters like snow or ice accumulation can cause structural failure.
4. Corrosion: Exposure to water, chemicals, or salt (in coastal areas) can corrode bridge components, weakening their structural integrity.
5. Environmental Factors: Extreme weather events such as earthquakes, hurricanes, floods, or strong winds can put excessive stress on bridges, leading to collapse.
6. Scour: Erosion of soil or riverbed around bridge piers or supports due to flowing water can undermine their stability.
7. Foundation Issues: Improper foundation design or inadequate subsurface investigations can lead to settlement or failure of bridge foundations, causing structural instability.
8. Fatigue: Repeated loading and unloading of bridges (especially in high-traffic areas) can cause material fatigue, leading to cracks and eventually failure.
9. Maintenance Neglect: Lack of regular inspection and maintenance can lead to undetected deterioration, which can compromise bridge safety and increase the risk of collapse.
10. Human Error: Mistakes during construction or maintenance, such as improper installation, faulty welding, or incorrect assembly, can contribute to bridge failures.
