An Ashland woman was killed after being struck by a large vehicle on Interstate 5 near milepost 14 early Wednesday, police said.

An Ashland woman was killed after being struck by a large vehicle on Interstate 5 near milepost 14 early Wednesday, police said.

Teryl Collins, 51, apparently was walking in a southbound travel lane, near Ashland's south exit, when she was hit between 2:10 and 2:16 a.m., according to Oregon State Police.

The driver of the vehicle, believed to have been a semi-truck, bus or other large vehicle, did not stop and may not have realized the woman had been struck, said Sgt. Steve Mitchell with Oregon State Police. There were no skid marks at the scene or indications that the vehicle had tried to stop, he said.

"It's very possible that they did not even know that they hit the person, especially if it was a big semi-truck or a bus, or something like that," he said.

When state troopers arrived at 2:16 a.m., Collins was dead, Mitchell said.

Detectives are trying to determine why Collins, who was wearing dark clothing, would have been walking in the travel lane of the freeway.

"It's probably going to be nearly impossible, unless a witness comes forward that may have accompanied her," Mitchell said.

Oregon State Police received several reports from drivers who observed the woman walking on the freeway just before the crash, he said.

Mitchell said investigators are running toxicology tests to determine whether drugs or alcohol were involved.

Traffic was detoured between mileposts 14 and 11 between 2:30 and 7:30 a.m. as investigators worked at the scene. The freeway reopened at about 7:30 a.m.

Detectives are seeking information from potential witnesses of the crash or from people who may have seen the woman before the crash.

Anyone with information about the crash is asked to contact Oregon State Police's Central Point office at 541-776-6114 or the after-hours dispatch center at 541-776-6111.

Contact staff writer Hannah Guzik at 482-3456 ext. 226 or hguzik@dailytidings.com.