MAURICE RIVER -- A Philadelphia woman died in a three-vehicle accident that allowed both sides of Route 55 to be closed for about six hours Thursday morning, officials said.

New Jersey State Police Lt. Brian Polite said Lydia Brannon, 62, was pronounced dead at the scene at 6:22 a.m. Thursday. The accident took place around 5:45 a.m.

Polite said the initial investigation reveals that Timothy Dupnock, 27, of Port Norris, might have fallen asleep at the wheel of a Chevy Silverado pickup truck while driving southbound on the highway and crossed over into the northbound lane.

The truck struck Brannon’s Ford Fusion and sent it across to the southbound side, where a freightliner tractor-trailer struck her vehicle head-on, Polite said.

Dupnock sustained non-life threatening injuries. The tractor-trailer driver, Raymont Felder, 38, of Gwynn Oak, Maryland, suffered moderate injuries and was transported to a hospital.

The Daily Journal reported that Brannon had another home in Avalon. 

This accident remains under investigation, Polite said. 

--Erin Serpico