A DWUI arrest in Cheyenne sets off a countdown you might not realize has started. Wyoming law gives prosecutors in Laramie County real tools to push for a conviction, and the clock on your license suspension starts well before your first court date. Getting an attorney involved early isn’t just good advice. It can be the difference between a conviction on your record and a case that goes another direction.
Just Criminal Law defends DWUI and DUI charges throughout Laramie County, including in the 1st Judicial District Court and Laramie County Circuit Court. Christina L. Williams, the firm’s founding attorney, spent years on the prosecution side before switching to criminal defense. That background shapes how Just Criminal Law approaches every DUI case in Cheyenne: with an understanding of exactly what the state is trying to prove, and where that proof tends to break down.
Wyoming DWUI Laws: What Cheyenne Prosecutors Are Working With
Wyoming’s DWUI statute (W.S. 31-5-233) prohibits driving with a blood alcohol concentration of 0.08% or higher, or while under the influence of alcohol or drugs to a degree that renders the driver incapable of safely operating a vehicle. The BAC threshold drops to 0.02% for drivers under 21, and to 0.04% for commercial license holders.
Laramie County prosecutors handle a significant volume of DUI cases. Cheyenne sits at the intersection of I-25 and I-80, and traffic enforcement along those corridors consistently results in arrests. The county attorney’s office isn’t in the habit of dismissing cases early without a reason. You need an attorney who knows how to give them one.
Wyoming DUI Penalties by Offense Level
First Offense DWUI
A first DWUI conviction in Wyoming imposes a maximum jail term of 6 months, a fine of up to $750, and a 90-day driver’s license suspension. Most first-time offenders don’t serve jail time, but it’s not guaranteed. The judge has discretion, and certain aggravating factors, such as a high BAC or a minor in the vehicle, can quickly change the calculus.
Second Offense DWUI
A second DWUI within 10 years raises potential jail time to 7 days to 6 months, with fines up to $750 and a 1-year license suspension. You will need an ignition interlock device (IID). The stakes are much higher the second time around, and prosecutors realize it.
Felony DUI (Third Offense or Aggravated)
A third DWUI offense, or a DUI involving serious bodily injury or death, is a felony in Wyoming. Felony DWUI carries a sentence of up to 5 years in prison and fines of up to $10,000. A felony conviction affects far more than your license: employment, housing, professional licenses, and firearms rights are all on the table. If you’re looking at a felony DUI charge in Cheyenne, you need defense counsel immediately.
How a DWUI Case Moves Through Laramie County Courts
Most misdemeanor DUI cases in Cheyenne start in the Laramie County Circuit Court. Your arraignment is your first appearance, where you’ll enter a plea. That happens quickly, often within days of arrest. From there, the case moves through pretrial conferences, potential motions hearings, and either a plea resolution or trial.
Felony DUI cases are a different ball game. During the initial bond hearing and the preliminary hearing, the Circuit Court judge determines whether there is probable cause to refer the case to the 1st Judicial District Court. It takes longer, and the stakes are higher, when it’s in District Court.
One detail that surprises people: the Wyoming Department of Transportation (WYDOT) license-suspension process runs on a separate track, parallel to the criminal case. You have 20 days from the date of your arrest to request a hearing to challenge the administrative suspension. Miss that window and you are suspended automatically, no matter what happens in court.
Defense Strategies in Cheyenne DUI Cases
Not every DUI arrest results in a conviction, and not every breath test result is accurate. The defenses available in a DWUI case depend on the specific facts, but some of the most effective approaches include:
Challenging the traffic stop.
Police need reasonable suspicion to pull you over. If the stop wasn’t legally justified, evidence gathered afterward may be suppressible.
Attacking the breath or blood test.
Breathalyzer machines need to be calibrated and maintained correctly. The officers have to follow specific procedures when administering the test. Blood draws have their own chain of custody requirements. Any interruption in that chain is a problem.
Questioning field sobriety test administration.
Standardized field sobriety tests (SFSTs) are only reliable when administered correctly under the right conditions. Weather, road surface, footwear, and medical conditions can all affect performance in ways unrelated to intoxication.
Examining the officer’s observations.
The officer’s testimony regarding your driving, appearance, and behavior becomes part of the record. Christina Williams understands how those observations are framed in police reports because she spent years reading them from the prosecutor’s side.
What Just Criminal Law Brings to Your Cheyenne DUI Defense
Most criminal defense attorneys can tell you what the law says. Fewer can tell you how a specific prosecutor in a specific county is likely to approach a case, and what arguments actually move the needle in that courtroom.
Christina L. Williams worked as a prosecutor before founding Just Criminal Law. That experience isn’t just a line on a resume. It means she evaluates every DUI case from the prosecution’s perspective first, identifying the weaknesses in the state’s evidence before they do. Just Criminal Law handles DUI defense throughout Wyoming, with specific experience in Laramie County courts.
The firm is trial-ready. Not every case goes to trial, but having an attorney who is genuinely prepared to take a case to a jury changes how prosecutors engage. It changes the offers they make. It changes the dynamic of the entire case.

