Just looking at google maps the stretch between power lines (with no markers on them) and the new tall foot bridge would be somewhere around 1600m, add 100m to the old Victoria bridge if we are to go back to that claim from a decade ago.
Claims I can find online mention around 1400m for a CL415 to get from 15m, scoop and get back to 15m...be one sporty pilot near kissing the wires on the way down just to see a 30 odd meter tall bridge structure coming up rather fast through the window!