宾夕法尼亚州的官员正在前进，为匹兹堡的Fern Hollow Bridge建造一个替代者，该桥梁于1月28日倒闭，选择了HDR Inc.和Swank Construction的团队，以设计和建造新结构，并批准了2530万美元的批准该项目的联邦资金。

宾夕法尼亚州运输部发言人亚历克西斯·坎贝尔（Alexis Campbell）通过电子邮件说：“团队“动员到该网站，并开始工作”。

Meanwhile, the National Transportation Safety Board, which has launched an in-depth probe of the collapse, has released an中期报告事故没有造成死亡，但导致倒塌时桥上的车辆中有10人受伤。

As expected, the report, issued on Feb. 7, includes factual details, but does not contain findings of the collapse's probable cause. That finding will be part of the NTSB’s final report, which will not be finished for perhaps 12 to 18 months, according to Chair Jennifer Homendy.

The interim report does, however, include some notable specifics. For example, it states, “Initial assessment of bridge components indicates that the collapse initiated at the west end of the structure.”

它补充说：“尽管焊接钢梁的某些区域被确定为裂缝急切，但在这些区域未发现原发性骨折。”

该报告还指出，“将进行进一步检查，因为拆除了桥梁的碎片并获得了无障碍的访问。”

此外，NTSB报告详细介绍了447英尺长的四车道桥梁，并指出“它是一个未涂层的风化钢，三跨，连续的刚性刚性'K”框架结构，带有两个焊接钢梁，焊接钢地板梁和滚动钢筋。”

报告继续。“结构的末端放在石工砌体基台上的钢筋混凝土帽上。每个梁由两个倾斜的焊接钢框架支腿支撑，也由未涂层的风化钢制成，这些钢形均由混凝土推力块上固定在混凝土上。”

NTSB also indicated that its investigation will cover the bridge’s design, condition, maintenance, rehabilitation, inspection and load-rating history.

它补充说，它计划对桥梁的几个结构组件进行法医检查，并说：“预计包括提取和文档在内的证据的恢复有望是一个漫长的过程。”

NTSB said, “All aspects of the collapse remain under investigation while the NTSB determines the probable cause, with the intent of issuing safety recommendations to prevent similar events.”

相对简短的报告还叙述了崩溃的细节，许多媒体之前报道了许多人。大约在上午6:40，当桥驶向下面的弗里克公园约100英尺时，四辆乘用车和阿勒格尼县公共汽车的尖锐港口管理局在桥上。根据NTSB的说法，第五辆车从东台上驶出。

这座桥的重量限制为26吨。

设计建造团队

2月4日，宾夕法尼亚州州长汤姆·沃尔夫（D）和匹兹堡市长埃德·盖尼（D）宣布that PennDOT planned to sign an “emergency contract” with the team of Swank and HDR “to immediately begin design efforts and mobilize to remove the existing bridge.”

The Federal Highway Administration said that on Feb. 1, it authorized PennDOT to use $25.3 million in federal formula funding for the project. Of that, $22.6 million will come from the Highway Infrastructure Program’s bridge replacement and rehabilitation funds. The other $2.7 million from the National Highway Performance Program.

FHWA said, “The state decides how to use this funding and FHWA reviews the request.”

Penndothad explored the use of a different type of funding, from FHWA's Emergency Relief Program, but decided to draw on the formula-funding categories.

Story于20122年2月8日更新了Design-Build团队开始工作的日期。