Oregon's fine system is set by the state, with only a few exceptions. Local jurisdictions can also add assessments.
Below are the "base fines" (the final fine can be higher or lower, depending on driving record):
Class A Violation- $427 Example would be speeding 31mph+ over the limit
Class B Violation- $242 Example would be speeding 21-30mph over the limit
Class C Violation- $145 Example would be speeding 11-20mph over the limit
Class D Violation- $97 Example would be speeding 1-10mph over the limit
However, in a work/school/or safety zone, those fines "double" (not really double, but close).
Now, here's where it gets fun. If the ticket is written to go to court in a municipal court, 80% of the revenue stays in the municipality while the other 20% goes to the state, regardless of who writes the ticket. If it is written to go in a circuit court, 20% stays in the municipality, and 80% goes to the state.