How did the bandicoot cross the road? With WA's first-ever fauna bridge, of course.

Construction on a unique fauna bridge over the Tonkin Highway is under way in a first for the state's road network.

Tonkin Highway's Northlink WA upgrade will include a fauna bridge. Credit:Main Roads WA

The bridge over Tonkin Highway near Maralla Road in Ellenbrook forms part of the $1 billion Northlink WA project's central section.

WA already has fauna underpasses but Main Roads spokesman Dean Roberts said the bridge was WA’s first fully vegetated fauna overpass, which would provide a natural route to encourage and allow native animals to cross Tonkin Highway safely.