This is from the fisheries web site. As for the rigs to use at the bridges, you will want to hold bottom so no float and a large sinker. It runs to fast to fish anything else. If using a 30cm tailor 2 large sinkers.
Take or be in possession of fish or
invertebrates in excess of the bag
limit or of a size outside the legal size
limits. All prohibited size fish must be
released immediately. You must not hold
prohibited size fish or fish in excess of the
legal bag limit in a live well or use them
for bait even if they are injured or dead
on capture. If you have purchased fish
or bait from a commercial vendor, retain
the receipt to present to an I&I NSW
fisheries officer.