A DUI conviction in Oregon will remain on your record forever. It does not drop off after a set amount of time, and Oregon state law precludes expungements for DUI convictions. Officially referred to as "Driving while Under the Influence of Intoxicants," or DUII, in Oregon, once a DUII is on your record, it's there for life.
Oregon DUII Laws
In Oregon, drivers over 21 are considered to be driving under the influence of intoxicants if their blood alcohol reading is 0.08 percent or more. If you are under 21, no alcohol is permitted to be in your system. Like most states, Oregon uses implied consent, meaning that by driving a motor vehicle you have implied that you will consent to a breathalyzer or urine test.
In most states, an arrest without a conviction can be removed from your record, but Oregon does not allow this for traffic offenses. So even if you are not convicted, the arrest will remain. However, arrests do not have the same negative consequences as convictions and should not have the negative impact on your life that a conviction can have.
Oregon does allow certain DUI offenders to enter into a diversion program. If you complete the requirements of the program, the charge is ultimately dismissed. The arrest will remain on your record, but no conviction will be entered.
Oregon does have mechanisms in place to have some crimes expunged from your record, or "set aside" as it's called in the state. However these mechanisms do not apply to driving under the influence of intoxicants, driving while suspended, or other traffic-related offenses.
Comparison to Other States
Oregon is relatively strict when it comes to criminal records, and DUI convictions and arrests. Most states will allow a DUI to be expunged after a set period of time. Utah, for example, allows DUI convictions to be expunged after 10 years if no subsequent offenses have occurred.