Gman_86Actually it was earlier than that. After one of the World Wars (first I believe, please correct me if I'm wrong) New South Wales elected to spend their war surplus on removing the vast majority of their level crossings.I would suggest rephrasing this to say "During the Great Depression as Unemployment Relief Works..,
Some of the major level xing elimination works seem to have taken place in the 1930s, such as North Strathfield, West Ryde, Parramatta Road near Harris Park.
Unsure dates might include North Goulburn, where an original dogleg bridge has been replaced by a newer straighter bridge.
At the station ?________? between Joppa Jn and Bredalbane a level xing seems to have been replaced by a dogleg, replaced in turn by the freeway bridge.
Bridges built on the Main South during duplication and regrading works were carried out between say 1912 and 1928, which is post WW1.