18/06/2026
Australia is building secret tunnels beneath its highways just for koalas. π¨ Roads have become one of the biggest threats to koala survival, as these slow-moving marsupials are frequently struck by vehicles while searching for food or mates. To solve this, engineers and wildlife experts have designed dedicated fauna underpasses, tunnel crossings, log bridges, and rope walkways specifically built to let koalas and other native animals cross safely without ever touching the road. In the City of Moreton Bay alone, wildlife cameras have captured over 54,000 photos of native animals using these crossings since 2019.
Research from Southern Cross University confirmed that koalas, kangaroos, echidnas, and other species are actively using these underpasses to forage across both sides of busy freeways. πΏ Transport for NSW is now installing a full network of tunnels and protective fencing along Appin Road, one of the worst koala roadkill locations in the state, developed in collaboration with scientists and local communities. The world's first dedicated koala log bridge, spanning over 27 metres, was built on the Gold Coast using locally sourced ironbark timber to replicate a koala's natural habitat. When a country builds bridges for its animals, that says everything about the values it holds.
π Source: Taylor & Goldingay et al., Australasian Journal of Environmental Management, 2024. Southern Cross University / Transport for NSW.