State troopers responded to the scene, on the Highway 2 trestle between Everett and Ebey Island, just a few minutes before midnight on Monday.
Arriving at the scene, troopers discovered that the 47-year-old pedestrian had been struck and thrown over the side of the trestle from the impact with the car. He was pronounced dead at the scene.
An investigation found that a 24-year-old Everett man was driving a 1994 Nissan Altima on the on-ramp to eastbound Highway 2 when the car left the roadway.
He driver steered the car over a raised median and through a raised dirt berm around secured metal pylons and drove onto the pedestrian walkway that parallels the highway over the trestle.
A 55-year-old woman and the 47-year-old man were walking east on the walkway, which is separated from the roadway by a concrete barrier. The man was walking several feet in front of the woman.
The woman was hit by the right mirror of the car and was not injured.
The man was struck and thrown over the side of the trestle due to the impact with the car. He fell about 40 feet, and his body was later found in a muddy, grassy area under the trestle. He was identified as Darren Streeter, 47, of Chehalis.
The car continued on and slammed into the concrete wall where the walkway turns right toward Ebey Island near Homeacres Road. The driver suffered severe leg injuries and was taken to Providence Colby Hospital in Everett.
Troopers have taken blood from the man and it is believed that alcohol or drugs were a factor in the crash.
The woman pedestrian told troopers she and Streeter had ran out of gas in Everett and they were walking home to Ebey Island at the time of the fatal crash.
Trooper Keith Leary said he has never before heard of a vehicle driving onto the Highway 2 pedestrian walkway, which is used daily by pedestrians.
The driver faces charges of vehicular homicide and felony hit-and-run.