The construction survey and control are the critical steps in assuring construction quality of a suspension bridge superstructure.

施工测量控制是悬索桥上部结构施工中保证施工质量的关键环节。

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In this paper, the construction procedures of foundations, superstructure, the principal construction technical features and construction difficulties of the bridge are expounded.

介绍其基础施工、上部结构施工步骤以及主要施工技术特点和难点。

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With the increase of bridge span, it is of crucial importance to decrease the deadweight of the superstructure.

随着桥梁跨度的增加，减轻上部结构的自重成为十分重要的问题。

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"A structurally deficient condition is a bridge that would have a rating of 4 either in the deck, the superstructure or the substructure, " he said.

CNN: States warned to inspect bridges