BRENTWOOD —A Barrington man intends to plead guilty to charges he was intoxicated when he crashed his car on Route 101 in Hampton, killing his passenger, prosecutors said.

David Frazier, 45, was driving about 115 mph just before the Dec. 10 crash that killed Travis Douglas, 31, a lieutenant in the U.S. Navy who worked at the Portsmouth Naval Shipyard, according to a judge’s decision.

Frazier is expected to make his guilty plea Nov. 2 in Rockingham County Superior Court.

Terms of a plea deal are not yet public, but the negligent homicide charge is punishable by up to 7½ to 15 years in state prison, according to court records.

State police were called to the scene about 1:16 a.m. Dec. 10 at the Route 1 on-ramp to Route 101 westbound.

Frazier’s vehicle was traveling west on Route 101 when he exited toward Route 1 and lost control of his vehicle, according to police.

State police said Frazier suffered serious injuries and was brought to Exeter Hospital for treatment.

Blood drawn from Frazier revealed he had a blood alcohol level of .11 — above the legal limit of .08, court papers say.

State Trooper John Kelly testified during a probable cause hearing on April 26 that the ‘black box’ from Frazier’s vehicle “indicated that it was traveling at 115 m.p.h. prior to the crash.”

One witness told state police that Frazier’s vehicle was “flipping end over end” as it crashed.

A second witness saw beer bottles or cans in the passenger’s compartment of the vehicle, according to court records.

Douglas was pronounced dead at the scene, police said.

A firefighter said he could smell alcohol on the driver’s breath after he was placed in an ambulance, according to an order by Circuit Court Judge Mark Weaver.

State Police later arrested Frazier on charges of negligent homicide and aggravated driving while intoxicated.

Hampton police and firefighters assisted at the scene, along with accident reconstruction experts with state police.

A grand jury returned the charges against Frazier in June. He remains free on bail.

jkimble@newstote.com