Greens Leader Bob Brown, who visited the Aboriginal campsite by the Jordan River this morning, says the proposed bridge and smothering earthworks should be stopped while prudent and feasible options are considered.

"The Commonwealth should not pay the cheque until a win-win option is adopted. The crossing should be rerouted," Senator Brown said.

"Failing that, a single-span bridge over the Jordan without further earthworks compacting the western side of the site, should be a last resort option.

"I have asked the Federal Minister, Anthony Albanese, for an urgent, independent review."

Senator Brown said the occupation of the site by Tasmanian Aborigines is going to gain national and international support.

"I recommend the governments do what DIER has not done and fully consider the negative impact that this destructive project will have on Tasmania's reputation."

Media contact: Marion Rae 0438 376 082