The design and evaluation of alternatives considers this complexity, in addition to construction, operation and maintenance issues.

选择方案的设计与评估，除了兴建、营运、维修之外，亦需考量上述问题的复杂性。

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Bridge's maintenance, reinforcement, strengthening is a complex technical work, including the old bridge evaluation, reinforcement design, reinforcement construction and so on.

桥梁的维修、加固、加强是一项复杂的技术工作，包括旧桥评定、加固设计、加固施工等内容。

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