He also played a pivotal role in the development of a common code of bridge design practice used by all Australian state road authorities.

Soon after he was appointed as the Resident Engineer to supervise the construction of Captain Cook Bridge over the Georges River at Taren Point.

After casting, the concrete deck would then be lowered by a controlled process to redistribute the stresses, matching the positive and negative bending moment capacities of the sections.

[1][2] In 1987, Wedgwood was appointed as the Chief Bridge Engineer of the DMR shortly before the department was merged with others to form the Roads & Traffic Authority.

[5] In the late 1980s, Wedgwood was appointed as the New South Wales representative on the Austroads committee that was working to develop a new bridge design code to be used by all the Australian state road authorities.

[1] Despite the criticisms Wedgwood persisted with the proposal and eventually the NSW Government made a commitment to the project, with the construction company Baulderstone Hornibrook appointed as the builders.

The new bridge and approaches cut into Thompson Square in Windsor damaging what is widely regarded as an important feature of early colonial history.