Collin County DWI Attorney

DWI charge classifications in Collin County

Texas DWI offenses are classified by enhancement factors. The base charge under Tex. Penal Code § 49.04 is a Class B misdemeanor (up to 180 days county jail and $2,000 fine) when BAC is below 0.15. The Class A enhancement (up to 1 year and $4,000) applies when BAC is 0.15 or higher. Felony DWI applies on the third offense or when a child passenger is involved. Intoxication assault under § 49.07 (third-degree felony) and intoxication manslaughter under § 49.08 (second-degree felony) involve serious bodily injury or death.

Cases originating in Collin County are prosecuted by the Collin County Criminal District Attorney’s Office and tried at the Russell A. Steindam Courts Building, 2100 Bloomdale Road, in McKinney. The county’s DWI docket runs through both the county courts at law, which hear misdemeanor DWI, and the district courts, which hear felony DWI.

What that classification means in practice is that a first-offense Collin County DWI is a misdemeanor decided in a county court at law, while a repeat or aggravated DWI moves to a district court carrying a felony punishment range and, on conviction, state-prison exposure rather than county jail. The enhancement that pushes a case across that line — a prior conviction, a 0.15 breath or blood result, a child passenger, or a collision causing injury — is usually the single most consequential fact in the file, which is why the first task on any Collin County DWI is confirming exactly how the State has charged each enhancement and whether it can prove it.

The 15-day ALR window

Every DWI arrest in Texas triggers a parallel administrative proceeding at the State Office of Administrative Hearings (SOAH) called the Administrative License Revocation (ALR) hearing. Under Tex. Transp. Code § 524.031, the defendant has 15 days from the date of receiving notice of suspension (almost always the date of arrest) to request the ALR hearing. Miss it and the suspension takes effect automatically on the 40th day after arrest. No extensions are available.

The ALR hearing is separate from the criminal DWI case. The burden of proof at the ALR hearing is preponderance of the evidence (lower than criminal "beyond a reasonable doubt"). The Department of Public Safety is the prosecuting party at the ALR. The issues are narrow: was the stop legal, was probable cause established, was the implied-consent warning properly delivered under Tex. Transp. Code § 724.015.

An ALR win does not dismiss the criminal case but it preserves the driver’s license, locks in the arresting officer’s sworn testimony for later impeachment in the criminal proceeding, and changes the negotiation posture with the prosecutor. We file the ALR request the same day a Collin County DWI client retains us.

Defense attack points on a Collin County DWI

Every Texas DWI defense has the same set of attack points, applied to the specific facts of the case. The ones we work hardest in Collin County DWI matters:

• The traffic stop. Reasonable suspicion supported by articulable facts under Terry v. Ohio and the Texas analog Carmouche v. State. We pull the dashcam and bodycam from the initial contact.
• The field-sobriety tests. NHTSA-validated standardized administration of HGN, walk-and-turn, and one-leg stand. We score the video frame-by-frame against the NHTSA training manual and identify protocol deviations.
• The 15-minute observation period. The breath-test operator must observe the suspect for 15 minutes with no oral intake before the test. We pull the body-cam to verify whether the observation was actually completed.
• The breath-test instrument. Intoxilyzer 9000 calibration log, slope-detector flags, mouth-alcohol detection, reference-sample log. We subpoena the 30-day maintenance log for the specific device.
• The blood-draw warrant. If a blood draw was taken under a warrant, we analyze the affidavit for four-corners probable cause and any Franks-hearing material misrepresentations.
• The chain of custody. From the breath or blood sample collection through the lab analysis, the chain must be unbroken. We subpoena the lab’s standard operating procedure and the analyst’s training record.

License consequences and occupational license

A first-offense DWI conviction in Texas triggers a 90-day to 1-year driver’s license suspension under Tex. Transp. Code § 521.342. ALR refusal triggers a 180-day suspension; ALR failure (BAC 0.08 or above) triggers a 90-day suspension. Second-offense and felony DWI trigger longer periods. After the suspension takes effect, the defendant may petition for an Occupational Driver’s License under § 521.241 permitting up to 12 hours per day of restricted driving for employment, household duties, school, and medical needs.

Our DWI flat fee covers the criminal case, the ALR hearing, and the occupational-license petition if needed. The structure mirrors how the case actually unfolds — three parallel proceedings on the same arrest. See our DWI defense page for the full statutory framework.

Collin County DWI — call before the 15-day ALR clock runs

Free 24/7 consultation. Same-day ALR filing on every retained DWI.

Collin County DWI: enforcement and prosecution

Collin County generates heavy DWI volume because of the road network its commuters use. Arrests cluster along US 75 (Central Expressway), US 380 (University Drive), the Sam Rayburn Tollway (SH 121), the President George Bush Turnpike (SH 190), the Dallas North Tollway, and state highways 5, 78, and 289 (Preston Road) — the corridors that carry late-night traffic between Plano, Frisco, McKinney, Allen, and Wylie and the rest of the metroplex.

The agencies working those roads are Collin County’s own. The Plano, Frisco, McKinney, Allen, and Wylie Police Departments make most DWI arrests inside their city limits; the Collin County Sheriff’s Office patrols the unincorporated county and the outlying towns; and Texas DPS troopers work the tollways and state highways. Most Collin County DWI stops begin as ordinary traffic stops — a lane drift, an expired registration, a headlight out, speed — and escalate only after the officer reports the familiar indicators: an odor of alcohol, slurred speech, bloodshot eyes, fumbling for a license. Every one of those escalation points is a place the defense can measure the officer’s written account against the bodycam and dashcam recording.

SFST, breath, and blood evidence in Collin County prosecutions

Once impairment is suspected, the officer conducts the Standardized Field Sobriety Tests (SFSTs) — Horizontal Gaze Nystagmus (HGN), Walk-and-Turn, and One-Leg Stand. These tests are scored against National Highway Traffic Safety Administration (NHTSA) protocols; deviations from those protocols are routine bases for defense challenges. Breath testing is performed on the Intoxilyzer 9000 (now replacing the 5000 across most Texas jurisdictions). If a breath sample is refused or unavailable, the officer typically obtains a search warrant for blood, which is drawn at a hospital or jail-trained phlebotomist station. The Texas Department of Public Safety Crime Laboratory analyzes blood samples by gas chromatography. Each step — stop, SFST administration, breath operator certification, warrant probable cause, blood draw chain of custody, laboratory analysis — presents discrete defense opportunities.

In a Collin County prosecution those steps are documented by whichever agency made the arrest — a Plano, Frisco, McKinney, Allen, or Wylie officer, a Collin County sheriff's deputy, or a DPS trooper — and the resulting reports, video, and lab work are produced through the Collin County Criminal District Attorney's Office in discovery. We read the breath-instrument maintenance records and the blood-warrant affidavit against that agency's own paperwork and raise any gap in the county court at law or district court hearing the case. Where the science or the stop will not hold up, that same record is the leverage that can move a Collin County prosecutor toward a reduction, a dismissal, or the County Court at Law No. 7 DWI/Drug Court track.

Penalties, ALR, and occupational license

Where a Collin County DWI penalty is imposed depends on the charge level, and the routing is local. A first- or second-offense misdemeanor DWI is filed in one of the county’s seven county courts at law; a felony DWI — a third offense, a DWI with a child passenger under Tex. Penal Code § 49.045, or an intoxication assault or manslaughter under §§ 49.07–49.08 — is filed in one of the 15 district courts. Both benches sit at the Russell A. Steindam Courts Building, 2100 Bloomdale Road, McKinney, and both are prosecuted by the Collin County Criminal District Attorney’s Office. When a case rests on a breath sample, the evidence comes through the arresting agency’s Intoxilyzer program; when it rests on a blood draw, the warrant affidavit and the laboratory analysis become what the court weighs.

Collin County also offers a sentencing alternative that many counties do not. County Court at Law No. 7 runs a DWI/Drug Court — a structured, supervised program of testing, treatment, and regular judicial review that can stand in for a straight jail-or-probation sentence for defendants who qualify. Any jail time that is imposed is served at the Collin County Detention Facility, 4300 Community Avenue, McKinney, and where a license is suspended the occupational-license petition is filed in the Collin County court handling the case. For the full statewide penalty grid, the ALR framework, and the occupational-license rules, see our DWI defense page.