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Design life of 50 years

The typical lifespan for which levees are engineered, based on mid-20th-century standards. Most of Pennsylvania’s levees, built between 1950 and 1970, have now exceeded this period, raising concerns about their structural integrity and the adequacy of their original design assumptions.

Catégorie : Environnement

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Pennsylvania’s aging levees are under pressure from scarce funding and severe weather

<figure><img src="https://images.theconversation.com/files/757589/original/file-20260902-60-bjqmrw.jpg?ixlib=rb-4.1.1&rect=0%2C0%2C5000%2C3333&q=45&auto=format&w=1050&h=700&fit=crop" /><figcaption><span class="caption">The Schuylkill River in Philadelphia flooded after heavy rains from Hurricane Ida in 2021. </span> <span class="attribution"><a class="source" href="https://www.gettyimages.com/detail/news-photo/water-from-the-schuylkill-river-covers-the-schuylkill-river-news-photo/1235030768">Branden Eastwood/AFP via Getty Images</a></span></figcaption></figure><p>Pennsylvania has over <a href="https://levees.sec.usace.army.mil">180 levees</a> that span approximately 155 miles (255 kilometers) and keep its rivers from flooding. They <a href="https://levees.sec.usace.army.mil">protect about 158,000 people and US$26.2 billion in property</a> across the state, according to the U.S. Army Corps of Engineers. </p> <p>However, those levees are aging, and funding to

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