The City to Sea Bridge is a landmark to tourists and Wellingtonians alike.

A landmark Wellington pedestrian bridge could be demolished over concerns about its structural integrity.

Wellington City Council spokesperson Richard MacLean confirmed demolition was one option being considered for the City to Sea Bridge, the city's main pedestrian connection between Civic Square and the waterfront.

"The main structural issue is that the piles do not extend fully down to bedrock," MacLean said.

MONIQUE FORD/STUFF The new Ferns orb sculpture by Neil Dawson being raised in Wellington's Te Ngākau Civic Square, exactly three years after the original was removed in 2015.

"We are currently investigating any necessary remedial action."

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Councillors were told about the concerns at a workshop in May.

Three options were presented for the bridge, one of which involved strengthening work and the other two involving complete demolition.

The City to Sea Bridge was labelled a "public safety issue" in the presentation, a tag council spokesperson Richard MacLean dismissed.

ROSS GIBLIN/STUFF Issues with the bridge have been raised with council officials since 2009.

That was in relation to concerns at the time which had since been clarified following engineering advice, MacLean said.

While acknowledging structural issues with the bridge, MacLean said it was not an earthquake risk pointing to its 40 per cent New Building Standard (NBS) rating and strengthening work that took place in 2010.

In a reply to a separate Official Information Act request, the council said an