The other reason is the NSW parliament doesn't do private member's bills for some reason unknown to me.
The cost (to taxpayer) of a typical piece of legislation is ~$500k (so I've heard, can't remember where), so it's all but impossible for the local member to get a local constituency community project that requires state legislation off the ground.
The law is the reason the rails and steel bridges are still there. Even the lightest lines have non-trivial scrap value.
Better let the NSW parliament know that private member bills aren't done then. They didn't get the memo
http://www.parliament.nsw.gov.au/prod/parlment/publications.nsf/key/FactSheetNo37?open&refnavid=x
And some of the private members bills introduced in 2012
https://www.parliament.nsw.gov.au/prod/parlment/nswbills.nsf/Search?SearchView&query=((privateflag%20=%20y)%20or%20(privateflag%20=%20private))AND([YEAR]=(2012))&searchorder=4