Many major roadways across Maryland have been plowed after a wintry Sunday, but state and local officials urged drivers to stay home unless necessary, as roads could still be dangerous.

Major highways like Interstates 95, 83, 70 and 695 are largely clear and passable, as are larger local roads, but all may remain slick in spots.

And dropping temperatures overnight could freeze wet areas, potentially creating black ice. With frigid temperatures forecast all week, icy conditions will likely stick around.

The State Highway Administration deployed more than 2,800 pieces of equipment — plows, trucks, blowers and more — to prevent roads from freezing. And local transportation departments have their own teams clearing roadways.

In Baltimore, where the transportation department is responsible for roads inside city limits, more than 700 vehicles have been activated, according to the mayor’s office.

“Pavements are not going to warm up anytime soon, they’re in the 20s,” SHA spokesperson Charlie Gischlar said. “That’s dangerous.”

Pretreated roads and Monday’s sporadic sunshine could melt some snow and ice. But if a road looks wet, it’s likely to refreeze.

SHA has an interactive map where residents can see which roads have been plowed recently. Roads with a streak of yellow indicate that a truck has passed within the last half hour, and arrows indicate the direction. The map also shows the locations of traffic cameras (available for viewing here), for those who want to eye the conditions of their commute.

In Baltimore, crews are focused on larger roadways, emergency evacuation routes (indicated by roadside signs) and key thoroughfares connecting to schools and hospitals, according to the mayor’s office. Some neighborhood roads may need to wait for plowing, and residents may have to clear their own alleyways.

Baltimore County government is responsible for more than 2,600 miles of roadway. For a snowfall of this size, residents should expect to wait at least 48 hours before all roads are plowed, according to the county website. Currently, about 70% of the roadways are passable, said Ron Snyder, a spokesperson for the county’s Department of Public Works and Transportation, and crews hope to have all roads passable by Monday night.

“We’re going to keep working until it’s done,” said Snyder, who urged caution and patience. “A lot of our [workers] haven’t been home since Saturday night.”

In Anne Arundel County, about 80% of county roads are clear and passable for commuters, said Jacob Richardson, a spokesperson for the county’s Office of Emergency Management. Crews will plow throughout the week, he said.

As of 11 a.m., close to 70% of Annapolis roads are passable, according to local officials, and the city is officially permitting nonessential travel.

Crews in Montgomery County plowed primary roads so that emergency vehicles could get within a quarter mile of every home in the county. Now they’re clearing neighborhood streets — a first pass is expected to be complete by Tuesday afternoon. Residents can expect local streets to be passable but not bare, according to the county’s transportation department.

Crews on Monday also plowed some intersections of the downtown areas of Bethesda, Silver Spring and Wheaton.

Roads remain slick in Harford County, where the local government maintains 1,078 miles of roadway, according to officials. It generally takes workers 24 to 36 hours to remove snow completely after a storm of this size, said county government spokesperson Matt Button.

People can use this interactive map to check whether their local government or the SHA is responsible for specific roadways.

Banner reporters Antonio Planas and Clara Longo de Freitas contributed to this story.