How DUIs are policed in Imperial Beach
Imperial Beach has contracted with the San Diego County Sheriff's Department for police services since 1983, and deputies now patrol the city out of the Sheriff's Imperial Beach substation at 845 Imperial Beach Boulevard. That's a change from the city's earliest years: Imperial Beach incorporated on July 18, 1956 — the 10th city in San Diego County and the 327th in California — and ran its own municipal police department for a period after that before the city moved to the county Sheriff's contract it still uses today; we could not independently confirm the exact year of that switch beyond the 1983 contract date itself.
Deputies have repeatedly set up DUI and license checkpoints on Palm Avenue, most often in the 900 block near 9th Street and at the 11th Street intersection — operations typically funded through California Office of Traffic Safety grants administered via the National Highway Traffic Safety Administration. Reported checkpoint results in Imperial Beach have run from a handful of arrests up into the low double digits per operation, out of several hundred vehicles screened each time; the most recent news reports we could verify date to the early 2020s, so treat the specific numbers as historical pattern rather than a current schedule.
- Imperial Beach incorporated July 18, 1956, after voters approved it on June 5, 1956 — San Diego County's 10th incorporated city.
- Police services have been contracted to the San Diego County Sheriff's Department since 1983; the Sheriff's substation serving the city sits at 845 Imperial Beach Boulevard.
Where an Imperial Beach DUI case is heard
A DUI arrest anywhere in Imperial Beach is filed at the South Bay Courthouse (the South County Regional Center), 500 Third Avenue, Chula Vista, CA 91910 — our own South Bay Courthouse page names Imperial Beach directly in its list of cities the courthouse serves, alongside Chula Vista, National City, San Ysidro, Bonita, and Coronado.
The San Diego County District Attorney's South Bay branch prosecutes the case. No South Bay city — not Chula Vista, National City, Coronado, nor Imperial Beach — has its own city attorney handling misdemeanor DUI prosecution; that carve-out exists only inside the City of San Diego proper. We found nothing on the South Bay Courthouse's own page or elsewhere on this site indicating felony DUIs from Imperial Beach are routed to a different building, so a felony case most likely stays at the same South County Regional Center, under the same DA's office, through the felony track.
South Bay Courthouse — court & DMV details for Imperial Beach
Booking and getting a car back after an Imperial Beach arrest
An Imperial Beach DUI arrest typically starts at the Sheriff's Imperial Beach substation, but that stop is just intake, not long-term custody. From there the county's detention system takes over: men are generally moved into San Diego Central Jail downtown, and women into the Las Colinas Detention and Reentry Facility in Santee. The South Bay Detention Facility in Chula Vista, despite sitting right next to the courthouse your case is heard at, is a housing-only facility with no intake function of its own, per the Sheriff's Department's own facility descriptions — someone arrested in Imperial Beach may be transferred there later, but isn't booked there directly. Family members trying to locate an Imperial Beach arrestee can call our office for help working the county's custody system.
Your vehicle is handled separately from the arrest. A routine DUI tow under Vehicle Code §22651(h) generally lets you or an authorized person reclaim the car from the tow yard once you cover the release paperwork and towing/storage fees. A mandatory 30-day impound under Vehicle Code §14602.6 is a different and more serious outcome — it only applies when the driver was also unlicensed, driving on a suspended or revoked license, or driving on a restricted license without a required interlock device, not for a DUI arrest standing alone. Ask us which situation applies to your stop during your free consultation.
San Diego County's southernmost beach city — and its ongoing sewage crisis
Imperial Beach sits at the very southwest corner of the continental United States, its sand running directly into the fence marking the U.S.–Mexico border and its eastern edge bordered by the Tijuana River National Estuarine Research Reserve — one of the largest coastal wetlands remaining in Southern California and a major stop on the Pacific Flyway for migratory birds. The city's identity has long centered on its 1,500-foot municipal pier and Pier Plaza on Seacoast Drive, a few blocks from where Palm Avenue meets the beach.
That same cross-border river has also made Imperial Beach the center of one of the region's most persistent environmental problems: for years, inadequately treated wastewater and storm runoff flowing north from Tijuana through the Tijuana River valley has repeatedly forced San Diego County to close the Imperial Beach shoreline to swimming, at times for months or years with only brief reopenings in between. County officials and reporting into late 2025 describe the contamination as an ongoing, unresolved cross-border infrastructure problem — binational agencies have fast-tracked an expansion of the South Bay International Wastewater Treatment Plant and the State of California and local cities have pursued legal action over the recurring flows, but as of this writing the shoreline has continued to face intermittent closures rather than a confirmed, permanent fix. We're not aware of any direct connection between the sewage issue and DUI enforcement, but it's the single fact most people searching for Imperial Beach already know about the city, and we don't think an honest page about the city should leave it out.
Imperial Beach was also the longtime home of the U.S. Open Sandcastle Competition, a free beachfront event that grew out of a committee formed in the early 1980s and, at its peak, drew reported crowds above 300,000 people to Pier Plaza over a single weekend. The event left Imperial Beach after 2011 amid funding and logistical strain, and the city replaced it in 2013 with its own, smaller Sun & Sea Festival, which has included a sandcastle-building contest for kids near the pier; we found no confirmation that the full U.S. Open event itself has returned to the city since. As of recent Census Bureau estimates, roughly 25,500–26,100 people live in Imperial Beach, a population that is just over half Hispanic or Latino and includes a sizable veteran community, reflecting the city's long ties to the Navy and Marine Corps installations nearby on the Silver Strand and in Coronado.
Arrested in Imperial Beach?
A DUI stop anywhere in Imperial Beach is filed at the South Bay Courthouse in Chula Vista. Call (888) 998-6938 for a free consultation before your 10-day DMV window closes.
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