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DUI Arrest Missoula Mt : A Step-by-Step Guide to the Legal Process & What You Should Know

Getting arrested for DUI is scary and confusing. This guide walks you through what typically happens in Missoula County (and Montana generally), what your rights are, and what actions you should take immediately. This is informational only — your case is unique. Always consult a qualified criminal defense lawyer.

Overview : Why This Matters

  • A DUI arrest triggers both criminal and administrative consequences (license suspension, fines, possible jail, chemical deprivation).
  • Montana recently overhauled its DUI law (effective Jan 1, 2022) — meaning procedural rules have shifted, and many older resources are outdated. Montana Department of Justice
  • In Missoula County, local practices (which court, how fast cases move, local prosecutors, etc.) matter. You want content that shows you “know the ground” in Missoula (judges, timelines, plea culture).

Step 1: The Arrest & Initial Processing

When a law enforcement officer believes you’re driving under the influence (or in actual physical control while impaired), here’s what usually happens:

1. Traffic stop / Detention

  • The officer stops you (probable cause or suspicion of impairment).
  • You may be asked to exit the vehicle, answer questions, perform field sobriety tests (walk-and-turn, one-leg stand, etc.).
  • You have constitutional rights (e.g. remain silent, request an attorney).

2. Chemical testing (breath, blood, or oral fluid)

  • Under Montana’s implied consent statute (MCA 61-8-1016), if you’re lawfully arrested, you are presumed to have consented to a breath or blood test. Refusal carries consequences. Montana State Legislature
  • The arresting officer may choose which type of test (breath or blood) to request in certain circumstances.
    Montana Department of Justice
  • If you refuse, your driver license may face administrative suspension (regardless of the criminal case). Implied Consent

3. Booking, arrest record, and custody

  • After arrest, you will be taken to local law enforcement / detention center in Missoula for booking (fingerprints, photo, record of charges).
  • You may be held until bail, bond, or release conditions are set.

4. Notice of license suspension / administrative action

  • If you submitted to testing and the results are elevated, or if you refused, DMV / Records & Driver Control Bureau will initiate license suspension.
  • You typically have a limited time (15 days in many jurisdictions) to request an administrative hearing to challenge the suspension. (Failing to request the hearing means the suspension goes forward by default.)

Step 2: First Court Appearance / Arraignment

Once the criminal charge is filed, you’ll have a first court appearance, often called an arraignment or initial appearance. Here’s what to expect:

  • The judge reads the charges against you.
  • You enter a plea: usually “not guilty” (you preserve your rights), “guilty,” or “no contest.”
  • The judge may address bail / release conditions (e.g. monetary bond, prohibiting alcohol consumption or driving, ignition interlock, daily breath test monitoring)
  • The judge may also inform you of deadlines and set further hearing dates.

In Missoula County, how fast this happens depends on case load and local court practices — sometimes within days to a few weeks. 

Step 3: Pretrial Process & Motions

  • Discovery: The prosecution must turn over evidence (breath test records, officer notes, calibration records, video, etc.).
  • Omnibus / scheduling hearing: The court schedules deadlines, motions, and trial dates. The defense may file motions (e.g. suppression of evidence, challenge breath test, challenge stop)
  • Plea negotiations: Many DUI cases resolve via plea bargaining before trial.
  • Change of plea hearing: If you and the prosecution agree, you plead guilty (or to a lesser charge). In misdemeanors, sentencing often occurs at the same hearing.
  • In felony DUI or serious cases, a pre-sentence investigation (PSI) may be ordered before sentencing.

The timeline here can stretch from several weeks to months, depending on continuances, the complexity of the forensic evidence, and court backlog.

Step 5: Sentencing & Penalties

If you are convicted (or plead guilty), sentencing follows. Montana law imposes a range of penalties based on offense number, aggravating factors, and other circumstances:

  • First DUI: 24 hours to 6 months in jail; fine between $600 to $1,000 (higher if minors in vehicle).
  • Second DUI: 7 days to 1 year in jail; fines $1,200 to $2,000 (or higher if children).
  • Third DUI: 30 days to 1 year; fines $2,500 to $5,000 (more if minors).
  • Fourth and subsequent DUI is a felony under Montana law.

Additional penalties can include:

  • License suspension (often 6 months on first conviction, 1 year on second, etc.)
  • Ignition interlock device or 24/7 monitoring programs
  • Probation, community service, alcohol or drug treatment, assessments, educational requirements
  • Court costs, fees, restitution
  • Vehicle forfeiture in some cases (especially repeat offenses)

Sentencing in misdemeanor DUIs often occurs at the plea hearing in Montana, but in felony or more serious cases, the court may delay sentencing to allow a PSI.

Step 4: Trial (If Case Does Not Resolve)

Once your sentence is imposed:

  • You must complete all conditions: jail, probation, treatment, ignition interlock, etc.
  • After your driver’s license suspension ends (or if it’s conditionally reinstated), you may need to apply, pay reinstatement fees, and meet conditions (e.g. maintain SR-22, interlock, abstain).
  • You may consider appeal, expungement, or collateral relief depending on your case (though Montana is strict about DUI).
  • Repeat offenses may stay on your record or trigger enhanced penalties; Montana has a “look-back” or “washout” approach (for certain prior DUIs within 10 years) (though for 4th DUI the washout doesn’t apply)

What You Should Do Immediately

  • Contact an experienced Missoula DUI defense attorney ASAP. The choices you make in the early stages (refusal, test challenge, motions) matter.
  • Preserve your rights. Be polite, but don’t volunteer incriminating statements. Ask for an attorney.
  • Request the administrative hearing. Don’t let your license suspension go unchallenged.
  • Collect evidence and document everything. Take notes of how you were stopped, what happened, who saw you, who drove, etc.
  • Obtain all reports, test results, audio / video, calibration records. Your attorney will need these.
  • Don’t miss deadlines. Montana law is strict about filing motions, challenges, etc.
  • Stay compliant with court orders. If released, abide by travel restrictions, monitoring, sobriety orders.
  • Be realistic but hopeful. Some cases are dismissible (bad stops, flawed testing), others may require plea negotiation; fight the strongest parts of the case.

Disclaimers

  • Every case is fact-specific — not every arrest follows this path exactly.
  • Laws change. Statutes and administrative rules are updated; this article is valid as of its publish date.
  • This is not legal advice; it’s general information. Always seek a defense lawyer.
  • You may waive certain rights (by missing deadlines, failing to demand hearings, etc.).

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If you’ve been arrested for DUI in Missoula, Butte, or Hamilton, your next steps are critical. Don’t say anything to law enforcement without legal counsel. Learn more about your rights and defense strategies by visiting our DUI Defense page or contacting our attorneys immediately.

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Protecting the rights of Montanans is something that the unique background of Maldonado Law provides insight, and experience to. We defend clients against a wide range of charges—from misdemeanors to serious felonies. Our experienced attorneys handle drug offenses, assault, theft, domestic violence, and more across Missoula, Butte, and Hamilton. Explore your options on our Criminal Defense page. 

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