In 1974, an Australian ranger proposed turning a service bridge into a wildlife corridor; 52 years later, it opened over a motorway carrying 40,000 vehicles a day, reconnecting two national parks

An idea proposed by an Australian park ranger more than five decades ago has finally become a wildlife crossing. In 1974, Royal National Park ranger Bob Crombie suggested using Cawleys Bridge to help animals safely move between areas of bushland separated by a major road.

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