Former Westland mayor Durham Havill says he is forming a new private company to build a "class one highway" from Haast to Milford Sound via the Hollyford Valley.
The $220 million road was being promoted by Westland Properties Ltd, a council-controlled organisation owned by the Westland District Council, in partnership with an unnamed offshore investor.
Mr Havill is chairman of Westland Properties but has signalled his intention to resign at the annual meeting later this month. When he announced his resignation he said the proposal was being "stymied" by lack of support from the Westland and Southland district councils.
The new company was "committed to forging ahead" with the road unencumbered by reporting commitments to either council, he said on Friday. It would lodge resource consents with the councils when the time was right.
Mr Havill would not say who else was involved in the new company, but said some of them did not live on the West Coast. Westland Properties chief executive Bruce Smith has already resigned from the organisation but Mr Havill would not say whether he was involved in the new company.