The storm, which reached category three cyclone status, wreaked havoc in parts of the central South Pacific over the past week.
Ha'apai's governor, the Reverend Mohenoa Puloka, said while damage to housing had been minimal and there was no loss of life, a major causeway connecting the two largest islands in the group had been badly damaged.
Mr Puloka said the causeway connected Lifuka, where the hospital and airport is, with the island of Foa.