John Roughan stated (Weekend Herald, June 5), “the cost benefits were so bad, the consultants presumed that it was out of the question”.
Any engineer can categorically state that if cyclists and pedestrians are allowed to cross the Auckland Harbour bridge on a regular basis, their activity will create a harmonic within the bridge structure and that harmonic will cause the bridge to collapse. London Council did almost that by building a pedestrian bridge across the Thames for their Millennium project. This was open for just one and a half days before a harmonic caused closure of the bridge pending rebuild.
Joe Little, St Heliers.