SIOUX FALLS, S.D. (AP) — South Dakota officials closed much of Interstate 90 as a winter storm pushes across the state.

Eastbound I-90 was closed from Rapid City to Mitchell while westbound I-90 from Mitchell to Wall was closed Saturday night. Transportation and public safety officials say I-90 will remain closed into Monday.

The National Weather Service said 8 to 11 inches (20 to 28 centimeters) of snow already has fallen in south central South Dakota as of Sunday morning. Another 6 to 10 inches (15 to 25 centimeters) of snow could fall in the James River Valley before the storm moves on Monday.

Officials say many roads in South Dakota are ice covered. Travel is discouraged unless absolutely necessary.

Visitation was canceled at Mike Durfee State Prison in Springfield on Sunday due to the weather.

(© Copyright 2019 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)