Where the buffalo roam: world’s longest wildlife bridge could cross the Mississippi

Conservationist aims to replace old bridge with bison preserve, benefiting environment and spotlighting Indigenous history

Between Iowa and Illinois, spanning the only stretch of the Mississippi River that flows from east to west, sits an exhausted 55-year-old cement bridge. Each day 42,000 cars drive across the ageing structure, which is slated to be torn down and replaced.

But when Chad Pregracke looks at the bridge, he has a different vision entirely – not an old overpass to be demolished, but a home for the buffalo to roam.

Related: How creating wildlife crossings can help reindeer, bears – and even crabs

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