1. Corrosion: Steel bridges tend to rust and corrode over time, which can lead to structural instability and expensive maintenance costs.
2. Weight limitations: The weight of a steel bridge can limit the size and weight of vehicles that can travel on it.
3. Environmental concerns: The production of steel has a significant impact on the environment, including air and water pollution and greenhouse gas emissions.
4. Cost: Steel bridges can be expensive to construct, especially for larger and more complex designs.
5. Aesthetics: Steel bridges can be seen as unattractive and may not blend in with surrounding landscapes or architectural styles.
6. Noise pollution: Steel bridges can generate noise from the clanging of metal, especially in areas with heavy traffic.
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