Sumatran orangutan filmed using canopy bridge to cross road in North Sumatra
Updated
Updated · The Guardian · Apr 25
Sumatran orangutan filmed using canopy bridge to cross road in North Sumatra
7 articles · Updated · The Guardian · Apr 25
A young male orangutan was captured on camera crossing the Lagan-Pagindar road via a bridge built in 2024 in Pakpak Bharat district, Indonesia.
This marks the first recorded use of a wildlife bridge by the critically endangered species, offering hope for the 350 orangutans in the area previously split by the road.
The bridge, installed by SOS and TaHuKah with local government support, also aids other wildlife and helps prevent genetic isolation among the estimated 14,000 remaining Sumatran orangutans.
Will the orangutan that crossed the bridge now lead its isolated family group to safety, and how will we know?
Can a single bridge save a species when thousands of forest hectares are still being cleared for palm oil nearby?
As wildlife crossings prove their worth, what prevents them from being mandatory for all new global infrastructure projects?
With the Wallis Annenberg Crossing opening, what can US conservationists learn from this low-cost Indonesian solution?
Why is one orangutan corridor celebrated while a UNESCO site in Borneo is cleared by the same industry?
Beyond physical bridges, how can AI help predict and prevent the next critical habitat fracture before it happens?
Overcoming Habitat Fragmentation: Sumatran Orangutan’s First Use of Man-Made Canopy Bridge in Pakpak Bharat
Overview
In 2023, the upgrade of the Lagan-Pagindar road in North Sumatra caused severe habitat fragmentation, isolating around 350 critically endangered Sumatran orangutans into separate forest patches and threatening their genetic diversity. To address this, a canopy bridge was installed in 2024, enabling arboreal wildlife to safely cross the road. While smaller species quickly adapted, orangutans only began using the bridge in April 2026, marking a vital proof of concept. This success supports expanding canopy bridges to reconnect habitats, maintain essential seed dispersal for forest health, reduce wildlife-vehicle collisions, and guide policy changes integrating wildlife corridors into development planning for long-term conservation.