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Overpasses must provide the required vertical clearance and often consider vehicle collision with piers or the superstructure. Installation usually needs a road closure, so lifting and splicing must be planned in detail.
Final member sizes, details and specifications are determined by the engineer of record for each project. This page describes general practice and does not replace project-specific engineering.
本内容为一般性技术信息，不能替代针对具体项目的结构设计。结构设计必须由合格工程师依据适用规范和主管部门的要求完成或批准。