RIDGEFIELD, Wash. -- A bicyclist was riding in the fast lane of Interstate 5 near Ridgefield when he was hit by a car and killed Monday morning.

The driver hit the cyclist just before 3 a.m. near the 179th Street exit. He didn't have a cell phone and drove away to try to get help at a gas station, according to Washington State Patrol Trooper Will Finn.

The gas station wasn't open, but a deputy saw the damaged car and began the investigation, Finn said.

"If you can imagine that area, there are no street lights, it's extremely dark, and a motorist going down I-5 at freeway speed is not anticipating seeing someone out there," he said. The cyclist was not wearing a helmet.

Finn said cyclists are allowed on the shoulder of the freeway, but not in the travel lanes.

The names of the bicyclist and the driver have not been released.

The freeway was blocked for more than three hours while investigators were at the scene.