I don't know about Oregon as their shits all fucked up, BUT in Washington if you have a relatively clean driving record you can qualify for one deferral every five years. What I'd do would be to call up relevant prosecuting authority (county prosecutors or municipality) and talk to the person who prosecutes traffic offenses and ask for a deferral. If they agree, you'll probably end up paying anywhere from half to as much in fees as the actual ticket but it won't go on your record or effect your insurance.
You probably also won't have to show up in the actual court in Oregon this way either
If you want to play hardball, you can plead innocent and request discovery from them and generally be annoying and see if they drop the charges, which they might. However, this way you might actually have to show up. Depending on the circumstances you can say you just finished passing a slow car and it was safe, etc, and cite to the statute that says you can speed when passing.
A third option, is that you can plead guilty but claim they're was mitigating circumstances. Which pretty means you make up some bullshit story like you were going with the flow of traffic or you were going down a hill and your speed momentarily got away from you. Some jurisdictions let you do this by mail so you won't have to go down there. This is the safest course of action and they most likely will just reduce your fine.
I wouldn't just plead guilty and pay it though.