Interstate 84 has been reopened, after being closed east of Pendleton for several hours starting Tuesday morning because of crashes in the Cabbage Hill area, according to the Oregon Department of Transportation.
In addition, the Pendleton School District reported that four of its school buses had been hit in rear-end collisions Tuesday morning.
The Umatilla Morrow Radio and Data District Board meeting has been canceled due to road conditions.
Afternoon early intervention and early childhood special education in Umatilla and Hermiston also have been canceled for Tuesday.
Portions of the westbound lanes of Interstate 84 were gradually reopened starting at 12:15 p.m. They had been closed from Ontario to 15 miles east of Pendleton.
The eastbound lanes which were closed from 10 miles west of La Grande to 7 miles east of Pendleton were reopened about 2:30 p.m.
The Pendleton School District reported that it decided not to delay schools at 5 a.m. when the temperature was 21 degrees and a light dusting of snow was on the road.
However, temperatures had risen to 28 to 30 degrees at 6:30 a.m. when about a third of students were already on buses, making roads slick.
There were no reports of injuries in the bus collisions and the buses were not damaged.
However, a school bus driver was injured when he fell on a slippery roadway while putting chains on a bus.