as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
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propose three ways to construct a bridge over the river.
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1. constructing a beam bridge, supported by piers and arches, over the river.
2. building a cantilever bridge, extending outwards from both sides of the river.
3. constructing a cable-stayed bridge, using cables to support the deck.
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