A crash has Highway 18 closed between Dayton and Highway 99W, the Yamhill County Sheriff's Office said Monday afternoon.

The crash was reported at about 4:45 p.m. near milepost 52.

There were no initial details on how many vehicles were involved in the crash, or whether anyone was hurt.

Deputies say there is a second, unrelated crash slowing traffic on Highway 18 at milepost 45, just east of the other Highway 99W junction in McMinville.

“Please use an alternate route and caution in the entire section of OR 18 between its junctions with 99W,” said Oregon Department of Transportation officials.