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📍 Ontario, CA  ·  34.0634°N, 117.6071°W

Accident at I-15 & 4th Street, Ontario CA

The I-15 at 4th St/Guasti interchange in Ontario serves Ontario Mills, Ontario Airport, and warehouse district truck traffic simultaneously. The multi-level interchange geometry causes dangerous blind-spot merge conflicts between passenger vehicles and commercial trucks.

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Quick Answer: Accident Lawyer Near 4th St / Guasti Rd, Ontario

If you were injured at or near 4th St / Guasti Rd in Ontario, CA, call Gonzales Law Offices immediately at 909-587-6336. Mark Gonzales (CA Bar #249340) has recovered $100M+ for Inland Empire accident victims on I-15. Free 24/7 consultations, no fee unless we win. We dispatch investigators same-day to preserve traffic camera footage and physical evidence.

CA Bar #249340 Ontario Specialist Same-Day Investigators No Fee Unless We Win
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Why 4th St / Guasti Rd Is a High-Risk Crash Location

Direct Answer

The I-15 at 4th St/Guasti interchange in Ontario serves Ontario Mills, Ontario Airport, and warehouse district truck traffic simultaneously. The multi-level interchange geometry causes dangerous blind-spot merge conflicts between passenger vehicles and commercial trucks. Gonzales Law Offices has handled multiple accident cases originating at and near this location, I-15 Freeway. Call us at 909-587-6336 immediately after any accident here to preserve evidence before it disappears.

Accidents at 4th St / Guasti Rd in Ontario, CA (ZIP 91764) frequently involve:

Nearby Emergency Resources

🏥 Nearest Hospitals

San Bernardino County Arrowhead Regional (12 mi), Chino Valley Medical Center (8 mi)

🚪 CHP Station

CHP San Bernardino

📍 GPS Coordinates

Lat: 34.0634°N
Lon: -117.6071°
ZIP: 91764

📞 Gonzales Law

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909-587-6336
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What to Do After an Accident at 4th St / Guasti Rd

  1. Call 911 immediately. Request police and medical response. Do not move vehicles unless there is an immediate safety hazard.
  2. Document everything. Photograph all vehicles, road markings, traffic signal faces, skid marks, and any nearby commercial cameras. Businesses around 4th St / Guasti Rd may have surveillance footage that gets overwritten in 24–72 hours.
  3. Seek medical care at San Bernardino County Arrowhead Regional (12 mi). Go even if you feel okay — whiplash, concussion, and internal injuries often appear 24–72 hours after impact.
  4. Call Gonzales Law Offices: 909-587-6336. We dispatch investigators within hours, send evidence preservation letters to commercial carriers, and handle all insurance communications from that point forward.
  5. Do NOT give recorded statements to any insurance adjuster before consulting us. Do not sign any releases or accept any offers.

Intersection Accident FAQs — Ontario, CA

Liability at 4th St / Guasti Rd may fall on the at-fault driver, a commercial vehicle employer (if a truck or delivery vehicle was involved), the City of Ontario (if road or signal defects contributed), or Caltrans (if a state highway was involved). Gonzales Law investigates all available liability theories simultaneously.
Commercial truck accidents at intersections often involve multiple liable parties: the driver, the trucking company, the cargo company, and sometimes the maintenance provider. Federal FMCSA regulations impose strict recordkeeping duties on carriers. We demand ECM (black box) data, driver logs, and maintenance records immediately after the crash.
Yes, if a signal malfunction, missing crosswalk paint, defective lane marking, or inadequate sight-line clearance contributed to your accident, the City of Ontario or Caltrans may be liable. You must file a Government Tort Claim within 6 months of the accident date. Call us immediately.
Intersection accident values range widely: minor soft-tissue cases may settle for $25,000–$150,000, while serious injuries (fractured bones, head trauma, spinal damage) frequently reach $500,000–$3M+. T-bone (side-impact) accidents at intersections tend to produce more serious injuries than rear-end crashes due to reduced side-impact protection.
California personal injury statute of limitations: 2 years from accident date (CCP §335.1). Government claims (city/Caltrans): 6 months. Commercial truck black box data is routinely overwritten in 30–90 days — act immediately to preserve evidence.

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Free Consultation — Ontario Accident at 4th St / Guasti Rd

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