Normally for a misdemeanor crime the statute of limitiation will be two years. However, if the State filed in the case and the individual skipped bail the statute will toll until he is brought to court to face the charge.
If he does not appear in court and additional charge of bail jumping could also be filed against him. Its not worth it to run.
You can't out run the case once its been filed in.
Best thing you can do is hire a good attorney to go talk to the state and see what can be worked out for you.
He also may have various defenses available for him. But, your not going to know until you face this matter and get it resolved.
I would advise you to hire an attorny that i a member of the National College for DUI Defense because we are held to a hier standard that regular attorneys in relation to representing individuals charged with intoxication offenses. You can find an attorney that is a member by going to the College's website and finding a lawyer in your area.
I hope things work out for you.
If the person skips bail, then there is no statute of limitations on the case. The failure to appear prevents any statute of limitation defense. In Washington, a misdemeanor offense for DUI must be filed in two years from the date of arrest. The court is NOT going to forgive him for running away and may penalize him further. Your friend needs to face the music and have counsel present with him at all hearings. Good luck!