You can typically defer a ticket once every 7 years. It's done through the county you got the ticket in.

You pay the ticket, a deferral fee, and if you go the next year without a ticket, it will stay off your record. If you get another ticket during that year, you get to pay both, and get two-holed by your insurer.

google "ticket deferral XXXX county Washington" and you should be able to find a link explaining the process.