The Most Dangerous Roads for DWI Crashes in Williamson County

In 2024, Williamson County recorded 391 alcohol-related crashes — more than one for every day of the year. Eight of those accidents were fatal, and about one-third happened in a single city: Round Rock.

Those aren't estimates. They come straight from the Texas Department of Transportation's Crash Records Information System (CRIS), the statewide database built from police officers' crash reports.

The knowledgeable team at The Law Office of Ryan H. Deck, led by an experienced Round Rock DWI lawyer, analyzed the CRIS annual data to map where drunk-driving crashes tend to cluster in Williamson County — road by road and city by city — so local drivers, reporters, and policymakers can see the pattern for themselves.

Here's what the data show.

Williamson County DWI Crashes: The Official Statistics

First, a quick terminology note: While Texas charges drunk driving as “DWI” (driving while intoxicated) under Texas Penal Code § 49.04, TxDOT's crash reports label these events as "DUI" crashes. However, the conduct is the same. Below are TxDOT’s figures for Williamson County in 2023 and 2024:

Sources: TxDOT, DUI (Alcohol) Crashes and Injuries by County, 2023 and 2024.

Two things jump out right away. First, the county's total was consistent at 391 crashes two years running, which means roughly 33 alcohol-related wrecks a month, despite years of "drive sober" campaigns. Additionally, Williamson County now ranks 11th out of Texas's 254 counties for total alcohol-related crashes, ahead of far larger metro counties like Nueces and Cameron.

For context, Texas reported 22,737 alcohol-related crashes in 2024, including 932 fatal crashes that killed 1,053 people.

Where Crashes Happen, City by City

TxDOT also publishes crash counts by reporting city. Here's every Williamson County community that appears in the 2024 cities report:

Source: TxDOT, DUI (Alcohol) Crashes and Injuries, Cities and Towns, 2024. City police jurisdictions can cross county lines, so figures for cities like Cedar Park and Leander include their full city limits.

Add it up and the pattern is unmistakable:

• Round Rock alone accounts for 33% of the county's alcohol-related crashes (129 out of 391) and recorded a fatal crash in 2024.
• The four cities along the I-35 and US-183 growth corridors (Round Rock, Georgetown, Cedar Park, and Leander) account for roughly two-thirds of the county total.
• Roughly one in four crashes happens outside the major cities on rural stretches of the county's Farm to Market (FM) network, where speeds are higher and help arrives slower.
• Even tiny Coupland (population under 400) saw one of the county's eight fatal crashes in 2024. Drunk-driving collisions are far more likely to be deadly on two-lane rural roads.

The Most Dangerous Corridors in Williamson County

Crash reports are filed by jurisdiction, so the following corridor breakdown maps the city data onto the highways that carry the traffic, as well as the bar and restaurant districts that feed it.

I-35 Through Round Rock and Georgetown

No road in Williamson County has more alcohol-related crashes than Interstate 35. It runs directly through the county's two highest-crash cities, Round Rock (129 crashes) and Georgetown (65), which together account for about half of the county total.

The corridor combines everything that makes DWI crashes likely: congested exits between University Boulevard and SH-45, heavy nightlife traffic returning north from Austin after last call, frontage roads with quick bar and restaurant access, and constant construction narrowing lanes.

The Georgetown exits near SH-29 and Williams Drive funnel late-night traffic off the interstate onto surface streets where impaired-driving stops are routine. If there's a single stretch of I-35 where DWI accidents and arrests occur most frequently, it's the roughly 15 miles between the Round Rock/Austin line and north Georgetown.

US-79: Round Rock to Hutto, Taylor, and Coupland

US-79 is the county's primary east-west route, and it features both a dense commercial strip through Round Rock and a high-speed rural highway past Hutto and Taylor.

The rural eastern half is where the corridor turns deadly. Coupland, which is situated just off US-79, logged one of the county's eight fatal crashes in 2024. Two-lane road design, high speed limits, and no medians mean an impaired driver who drifts across the center line often has nowhere to go except into another motorist.

RM 620 Through Round Rock

RM 620 links I-35 to the lake country entertainment corridors southwest of Round Rock. It's a winding, heavily signalized arterial route that carries bar, restaurant, and event traffic, and it contributes directly to Round Rock’s crash total. Late-night enforcement along 620 is heavy for exactly that reason.

US-183 and the 183A Toll: Cedar Park and Leander

Cedar Park and Leander sit on the US-183/183A spine, the fastest-growing corridor in the county. The toll lanes invite speed, and the parallel frontage and older US-183 sections add driveways, signals, and nightlife traffic moving between Austin and the northwest suburbs.

Cedar Park police are known for aggressive DWI enforcement in this area, including "No Refusal" operations on weekends.

SH-29, SH-95, and the Farm to Market Network

Roughly 100 of the county's 391 alcohol-related crashes in 2024 happened outside the cities listed above, on rural highways like SH-29 between Georgetown and Liberty Hill, SH-95 through Taylor and Granger, and Farm to Market roads such as FM 1660 and FM 3405. These roads see fewer crashes than I-35 but a far higher share of serious outcomes.

SH-130

The SH-130 toll road along the county's eastern edge posts the highest speed limits in the region. Traffic volumes are lower here, so total crash counts stay modest, but when an impaired driver crashes at 80-plus mph, the damage is rarely minor.

The SH-130 interchanges at US-79 in Hutto and SH-29 east of Georgetown also serve as common intercept points for late-night patrols.

Why These Roads See So Many Drunk-Driving Crashes

The data on DWI accidents in Williamson County highlight three major contributing factors that show up in crash research everywhere:

• Nightlife traffic plus a commuting route: The I-35 and US-183 corridors carry people home from Austin's busy entertainment districts every weekend night.
• Speed differentials: Toll roads and rural highways tempt drivers to speed, while alcohol use destroys the reaction time that high-speed driving demands.
• Rural road design: Undivided two-lane roads make head-on collisions much more likely, which is why unassuming places like Coupland appear in the fatality column.

There's a legal dimension to consider as well: These same corridors are where DWI patrols, weekend No Refusal initiatives, and blood-draw warrants are typically concentrated. More collisions mean more enforcement and more arrests.

Legal Implications of a Crash on These Roads

If you’re involved in a drunk-driving accident on any of the aforementioned crash corridors in Williamson County, here are the consequences you could face:

• No injury: Even a first DWI offense can come with jail time, fines, and license suspension.
• Serious injury: A crash that causes serious bodily injury can be charged as intoxication assault, a third-degree felony.
• Death: If prosecutors allege that your intoxication caused a fatality, the charge becomes intoxication manslaughter, a second-degree felony carrying two to 20 years in prison.

Depending on the facts of an incident involving a fatality, the state may also pursue manslaughter or criminally negligent homicide charges. Our team has written guides laying out how Texas classifies fatal crash charges and the defense strategies that can create reasonable doubt.

Keep in mind that being involved in a crash isn't the only way to receive drunk-driving charges. Williamson County drivers frequently get arrested in parking lots and driveways. (Yes, you can get a DWI on private property in Texas.) Regardless of the location, you have rights during the stop, including the right to refuse a vehicle search.

About the Data

As noted, all of the crash figures provided here come from the Texas Department of Transportation's Crash Records Information System, which compiles every reportable crash in the state. Specifically, we used TxDOT's published annual "DUI (Alcohol) Crashes and Injuries" summaries by county (2023 and 2024) and by city (2024).

County rankings were calculated by comparing the total crash counts for 2024 across all 254 counties in Texas. Corridor attribution maps each reporting jurisdiction to the primary highways it contains, while city police jurisdictions may cross county lines.

Anyone can verify or extend this analysis using TxDOT's public CRIS Query Builder tool. Journalists and researchers are welcome to cite this analysis with attribution and a link.

The Stats Are Clear, and So Is Your Next Step

Williamson County's drunk-driving problem isn't evenly distributed. It concentrates on I-35 through Round Rock and Georgetown, along US-79 to the east, and up the 183 corridor through Cedar Park and Leander, the same roads where enforcement is heaviest, and one bad night can easily turn into a felony.

Ryan H. Deck is a former prosecutor and one of the few Texas attorneys Board Certified in Criminal Law. He handles the legal fallout of DWI accidents throughout Williamson County in the same courts where these cases are prosecuted. If you've been arrested after a stop or crash anywhere in the area, contact us for a free consultation.

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