However, a deal brokered by Far North Holdings chief executive and railway trustee Andy Nock means the Kawakawa-Opua leg of the cycle trail should be open before next summer.
Under the agreement bikes will be carried on modified carriages from Kawakawa to Taumarere; cyclists will then ride the rest of the way to Opua on a pedestrian/cycle trail the council will build this winter.
The railways trust's long-term goal remains to strengthen the Long Bridge and restore the line all the way to the Colenso Triangle near Opua, allowing bikes to be carried all the way to the coast.
Railway trust funding manager Frank Leadley said it was a ''win-win situation''.
Mr Nock said the agreement with the rail trust would create ''a real point of difference'' for the Far North cycle trail. Future options for extending the tourism experience from Opua included steam boat excursions and ferry links to Russell, Paihia and the Waitangi Treaty Grounds.
Rail trust chairman Johnson Davis said he was delighted an agreement had been reached. It meant the cycle trail could become operational without having to wait until the railway upgrade was complete. The trust would continue working towards having steam trains running all the way to Opua.
The cycle trail is being developed by the Far North District Council with a $4m government grant to boost tourism and jobs.
The council will meet the costs of clearing the track to Opua, rebuilding bridge 12, digging out a tunnel blocked by a slip and surfacing the track. Work is expected to begin this month.
Once the trust has the money it will rebuild the Taumarere-Opua track for railway purposes.