The bridge area I am referring to is the old bridge on the Katherine side of the Victoria River Roadhouse. It’s the dirt road that is blocked on the end and you can see the new bridge above. You cross this new bridge when driving from Katherine to Victoria River.
You have an excellent vantage point from here well above any crocodile infested area so just keep scanning the banks of the river and the bushes for birds.
This was the best I could do for the Purple-crowned Fairy-wren. There was a male and some females I could see with binoculars but they were too far and too small to get the focus on them.
We also walked around the back of the campground but couldn’t find any more Fairy-wrens, I was hoping for a closer view.