He raised the issue at an Otago Regional Transport Committee meeting in Dunedin yesterday during discussion on funding a replacement.
Mr Geddes said he used the bridge twice a day and considered the heavy traffic involved in the construction of two major developments on the south side of the bridge was causing damage to the structure.
"There is an extraordinary load being put on that bridge, there's no question about that."
The two projects are the $1 billion Kawarau Falls Station Resort and the $2 billion Jacks Point development.
"That has lifted the instance of heavy vehicles across that bridge significantly.
''I don't think anyone understands the impact of that and that's something that needs to be monitored," Mr Geddes said.
"If that bridge is suddenly found not to be able to support the traffic it carries now, it creates enormous issues for the whole southern part of the South Island."
Mr Geddes was unhappy that only $11,000 of work towards a replacement for the bridge was budgeted in the committee's programme for the next three years.
"The programme we signed up to in 2005 had the bridge in construction this year and to postpone it another four years, in a rapidly growing region, I don't think is a wise decision."
Mr Geddes said the Queenstown Lakes District Council would raise the matter with the New Zealand Transport Agency.
The agency's regional director, Bruce Richards, said he would look into the safety concerns raised by Mr Geddes.
He rejected the suggestion construction work was due to begin this year.
The bridge "had never been programmed for construction" he said, and "there was no document in the land" that said construction would begin this year.
He also told the Otago Daily Times the agency had been in discussion with private developers "who had expressed the possibility" of making contributions to the bridge.
He would not say who the developers were.
