A 31-year-old Baton Rouge man pleaded guilty Monday to vehicular homicide charges stemming from a fiery Interstate 10 crash that killed five members of a Georgia family in October 2009.

State District Judge Trudy White will sentence Dwayne Leggett on Sept. 7.

State troopers have said Leggett’s blood-alcohol content was 0.18 percent after the Oct. 2, 2009, crash near the Siegen Lane overpass.

In Louisiana, a blood-alcohol content of 0.08 percent or higher is considered presumptive evidence of intoxication.

Vehicular homicide with a blood-alcohol content of at least 0.15 percent carries a prison term of 5 to 30 years.

Two days before the fatal crash, Leggett was released from a pretrial diversion program he began after a first-offense DWI arrest on April 17, 2009, in West Baton Rouge Parish.

In the East Baton Rouge Parish crash, Leggett was driving a 2005 Ford pickup truck westbound at 2 a.m. when he traversed the Siegen Lane overpass and hit the rear of a 1994 pickup, troopers have said.

The older pickup ? stopped because of road construction ? burst into flames upon impact, inflicting third-degree burns on all five members of an Ashburn, Ga., family inside the cab.

A 2-year-old child died at the scene. Four other family members, including the toddler’s mother, died days later from their injuries.