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America's failing bridges
| 题名： | America's failing bridges |
| 正文语种： | eng |
| 作者： | Mike Woof |
| 摘要： | A new report in Bob Poole's Transportation Newsletter #241 highlights the problem that the US still faces with bridge infrastructure. According to the latest data, the US still has 75,000 bridges in dire need of replacement because they are at the end of their design life, or have even passed beyond it. Poole refers to the National Bridge Inventory data from the US Department of Transportation, which shows a worrying 222,000 bridges in all that require either major repairs or have to be replaced. The American Road & Transportation Builders Association (ARTBA) has estimated that repairing or replacing all these deficient or aged bridges in the US will cost a shocking US$300 billion. Clearly, this work is not going to happen soon. A solution has to be found for those 222,000 aged US bridges however and the situation is critical. There have been bridge collapses in the US such as in Pittsburgh in early 2022, when the Fern Hollow Bridge gave way. The bridge was replaced quickly due to highly effective working by Pennsylvania Department of Transportation, the City of Pittsburgh authorities, the engineering firm HDR and the contractor Swank Construction. Luckily, nobody was killed and the few people injured were able to recover. But the old bridge was known to have issues and it should have been repaired or replaced earlier. More funding from the US Federal Government is needed to tackle the issue of defective bridges as Poole highlights. One such is the Blatnik Bridge that connects Minnesota and Wisconsin, the replacement project for which comes with an estimated pricetag of over $1.7 billion. The existing bridge is over 60 years old and is no longer able to cope with current traffic demands. The Department of Transports (DOTS) for the respective states can manage to contribute around $400 million apiece for the work and are working together for the project but are looking to the US Federal Government to provide the rest. |
| 出版年： | 2023 |
| 期刊名称： | World highways |
| 卷： | 32 |
| 期： | Nov./Dec. |
| 页码： | 4-4 |
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