Published: 05-14-2026 | Category: Troop L
Slidell – On May 14, 2026, at 11:30 a.m., Troopers with Louisiana State Police Troop L began investigating a single-vehicle crash on US Highway 11 near North Lakeview Drive in St. Tammany Parish. The crash claimed the life of 21-year-old Gavin B. Dietrich of Slidell.
The preliminary investigation revealed that the crash occurred at approximately 3:00 a.m., though it was not reported until later in the day. Dietrich was driving a 2025 Kawasaki Ninja ZX 10R south on US Highway 11 near North Lakeview Drive at a high rate of speed while approaching a right-hand curve. For reasons still under investigation, Dietrich failed to negotiate the curve and ran off the left side of the roadway into a gravel parking lot, and over an embankment. Dietrich was ejected from the motorcycle and struck the coastal shoreline riprap.
Dietrich, whose helmet use is unknown at this time, sustained serious injuries and died on the scene. As part of the ongoing investigation, a routine toxicology sample was obtained for analysis. This crash remains under investigation.
Troopers wish to remind motorists to always make good decisions while operating a motor vehicle. Never drive impaired, fatigued, or distracted; follow all traffic laws, and always ensure every occupant is properly restrained. Additionally, when riding motorcycles, utilizing proper safety equipment, such as DOT-approved helmets, can decrease the chances of traumatic brain injury. We encourage all riders to take an approved motorcycle safety course. Motorcycle riders can gain more information on helmet guidelines and rider safety courses by visiting https://www.lsp.org/services/training/motorcycle-safety/.
Contact Information:
Trooper Marc Gremillion
Louisiana State Police
Public Affairs Section – Troop L
Phone: (985) 893-6250
[email protected]