75th anniversary plans this weekend for Australia's greatest engineering achievement, the Sydney Harbour Bridge, are being overshadowed by a row over who designed it. 'The row goes back a long time.
Australian John Bradfield did the concept design but it was Sir Douglas Fox & Partners and specifically Ralph Freeman who did the detailed design, ' said a spokesman for UK consultant Hyder which bought Freeman Fox. The bridge is often referred to as 'The Coathanger' due to its steel arch design, which is composed of two 28 panel arch trusses. Their heights vary from 18m at the centre of the arch to 57m beside its pylons. It stands 134m above mean sea level and spans 509m. Most of the steel used for the bridge was imported from Middlesbrough. The bridge opened on 19 March 1932. Sir Douglas Fox & Partners became Freeman Fox in 1938, which merged to form Acer in 1987 and became Hyder in 1996.