Car Accident at the 101/Westlake Blvd Interchange: What to Do

Curt Brown, Esq. — Founding Partner

Local Westlake Village Injury Attorney · UCLA Law

Curt Brown is a founding partner at L&F Brown. He grew up in Thousand Oaks, just over the hill from Westlake Village, attended Thousand Oaks High School, graduated from UCLA Law School, and has spent his career handling injury cases on both sides of the LA/Ventura County line.

The US-101/Westlake Blvd interchange in Westlake Village is one of the highest-traffic junctions in the western San Fernando Valley and Conejo Valley corridor. Thousands of vehicles pass through this interchange daily, and the combination of freeway on-ramps, off-ramps, signal changes, and merging traffic creates conditions where accidents happen regularly. If you were involved in a crash at or near this interchange, the steps you take in the first hours will shape the strength of your personal injury claim.

Crashes at the US-101/Westlake Blvd interchange involve a unique jurisdictional wrinkle: Westlake Village straddles the Los Angeles and Ventura county line, and the precise location of the crash determines which courthouse handles a lawsuit. LA County incidents go to the Chatsworth Courthouse, while Ventura County incidents go to Ventura County Superior Court. On the freeway itself, the California Highway Patrol (CHP) has primary jurisdiction. For streets near the interchange, the LASD Lost Hills Station and the Ventura County Sheriff's Office each cover their respective sides of the county line.

Step One: Move to Safety and Call 911

If your vehicle is drivable and it is safe to do so, move it out of the travel lanes onto the shoulder or an exit ramp. The US-101 carries high-speed traffic and secondary collisions at accident scenes are a serious risk. Once you are safe, call 911. On the freeway, CHP will dispatch units. Depending on where the off-ramp crash occurred, LASD Lost Hills or VCSO may also respond. Always wait for law enforcement and never leave the scene before officers arrive and take a report.

Step Two: Get Medical Attention

Adrenaline masks pain. Many people feel fine at the scene of a crash and discover serious injuries hours or days later. Whether you feel injured or not, seek medical evaluation as soon as possible. The closest full-service hospital to the interchange is Los Robles Regional Medical Center, located at 215 W Janss Rd in Thousand Oaks, just a short drive from the scene. Document every symptom, every visit, and every treatment recommendation. Gaps in medical care are one of the first things insurance adjusters use to minimize your claim.

Step Three: Document the Scene

While waiting for law enforcement, photograph everything you safely can. Take pictures of all vehicles involved, their positions on the road, visible damage, skid marks, the signal state if visible, and any traffic control devices near the interchange. If other drivers or witnesses are present, collect their names and contact information. Surveillance cameras at nearby businesses along Westlake Blvd and Agoura Road may have captured the crash, and an attorney can move quickly to preserve that footage before it is overwritten.

Step Four: Do Not Admit Fault

At the scene, limit what you say. Tell the CHP or sheriff's deputy what happened factually, but do not speculate about fault, apologize, or make any statements that could be interpreted as admissions. Insurance adjusters review police reports carefully and will note anything that suggests you contributed to the crash.

Step Five: Notify Your Insurance Company

California law requires you to report accidents to your insurer. Notify them promptly, but keep your statement brief. You are required to report the accident, not to give a recorded statement that could be used against you. Before giving any recorded statement to any insurer, including your own, consult with an Westlake Village car accident attorney.

Liability at the 101/Westlake Blvd Interchange

Liability at this interchange often comes down to lane changes, failure to yield on ramps, and distracted driving at the signal at Westlake Blvd. If the other driver merged unsafely, missed a signal, or was following too closely on the exit ramp, they are likely at fault. If road design, signage failure, or signal malfunction contributed to the crash, the California Department of Transportation (Caltrans) or a local agency may share liability, requiring a government claim within six months.

Why the County Line Matters for Your Lawsuit

The exact GPS coordinates of where the crash happened at or near the interchange determine whether your lawsuit is filed at the Chatsworth Courthouse or Ventura County Superior Court. This affects the jury pool, local court rules, and procedural timelines. An attorney familiar with both venues will use this knowledge strategically when evaluating whether to push for trial or accept a settlement offer.

If you were injured at the US-101/Westlake Blvd interchange or anywhere near it, contact L&F Brown for a free case evaluation. We know both the LA County and Ventura County court systems and handle claims throughout Westlake Village. Visit our Westlake Village personal injury page to learn more about your options.