MONROE TWP. — A Williamstown man died after his speeding car spun out of control on Janvier Road Sunday.

Isaiah S. Burnett, 27, was driving his 1993 Honda Civic north on Janvier Road approaching Jones Kane Road at about 10:55 p.m. when he drove over what police called an imperfection in the road. This caused Burnett to swerve to the right, the Honda’s right-side tires leaving the paved highway for about 81 feet before he could pull back onto the road, police said.

The imperfection was described as a seam at which two sections of asphalt come together, said police.

The driver was also traveling above the posted speed limit of 35 mph, police said.

The Honda then crossed the center line, crossed the southbound lane and went off the road on the left side, hitting a wooden mailbox post and a utility police before hitting a large tree, said police.

The car rotated for about 21 feet, then hit a second tree. The force of that impact caused Burnett to be thrown from the car; he came to rest after hitting a tree, police said.

Burnett was transported to Kennedy University Hospital in Washington Township, but was pronounced dead there, said police.

Officers at the scene were assisted by Monroe Township Emergency Medical Services, Williamstown Fire Department, Life Support II and Clark’s Towing.

Ptl. Carmen W. Iacovone Jr. of the Monroe Traffic Safety Bureau is investigating the crash.