The Texas Dept. of Transportation halted some work on its Corpus Christi Harbor Bridge replacement project in July after an independent engineering review found “significant design flaws that raise serious concerns about the safety” of the bridge.

TxDOT announced that it had暂时暂停工作在桥上跨越上层建筑，7月15日，当时未指定的“安全问题”。该机构最近发布了给Flatiron/Dragados合资企业建造该桥梁的信，揭示了有关关注点的更多细节。设计问题是在法国运输工程公司Systra的子公司国际桥技术（IBT）的独立审查中发现的。

“Currently there are concerns on the part of TxDOT, our consultants and our independent reviewers that the final design of the cable-stayed bridge is highly problematic, and if built to completion, would create safety concerns,”TxDOTsaid in a statement on its website.

Officials halted work because the joint venture’s work schedule indicated they were preparing to install delta frames, according to the letter. But IBT’s review indicated design defects with the delta frames and their connections to adjacent precast box units.

根据这封信，IBT还发现塔架钻井轴的容量不足。它引起了人们的担忧，即在某些负载条件下，基础盖的缺陷可能会崩溃。信件指出，中间码头的“显着”隆升和“在施工过程中与起重机相关的过度扭转和其他压力”也引起了人们的关注。

TXDOT的信表明，IBT的报告已于4月29日交付给项目团队，但计划交付的副执行董事Brian Barth写道，Flatiron/Dragados“未能充分解决不合格的设计”。Barth写道，建筑商和录制工程师是Arup和CFC团队，否认该设计有任何问题。

A spokesperson for the project team declined to comment on the IBT review or status of its response in addressing TxDOT’s concerns.

这不是第一次质疑桥梁的设计。在2020年TXDOT已删除该项目的原始记录工程师Figg Bridge工程师是该项目对公司设计的迈阿密行人桥崩溃的审查后的。ARUP和CFCwere added as the new engineer-of-record later that year.

该计划要求在Corpus Christi Ship Channel上载有1,661英尺长的六车道范围内的主要跨度，并带有37号州际公路，美国181号州际公路和286号州。其他连接道路和交汇处也将被重建，新桥完成后，当前的桥梁将被拆除。美国运输部联邦公路管理局估计总成本为11亿美元。

In its most recently posted施工更新，该项目小组报告说，工作人员使用龙门起重机在6月的南部进场中施加了四个跨度升降机。