Steady snowfall on Monday has made the roads treacherous for drivers in the national capital area.

The National Weather Service said “roads, and especially bridges and overpasses, will likely become slick and hazardous” as a mix of snow, sleet and freezing rain is expected to come down until early Tuesday.

Transportation officials in Virginia, Maryland and the District urged people to avoid driving so snow plows and work crews can treat the roads.

It appears drivers have heeded the warning: Crashes have been kept to a minimum so far Monday, according to a live traffic map created by WTOP News.

Most crashes that have taken place have been on the interstates.

In Maryland, two accidents were recorded along Interstate 270 in Montgomery County between 6 and 8:30 a.m., and another crash along Interstate 95 near Laurel was documented just before 8 a.m.

In Virginia, a crash on Interstate 495 near Telegraph Road has the right lane of the highway blocked.

Meanwhile, Virginia State Police said in a news release that they had responded to more than 200 crashes between 4 p.m. Sunday and 4 a.m. Monday, although not all were storm-related, according to The Associated Press.

Several accidents included injuries, while one was fatal. A 32-year-old man died around midnight in Wakefield, which is south of Richmond, after his truck ran off the road and struck a tree. Police said he was driving too fast for roadway, the AP reported.

A crash on D.C. 295 in Southeast Washington is slowing traffic both ways, as is a motorcycle crash on North Capitol Street that is bogging down motorists between K Street and L Streets.

Commuter buses in the region have either canceled their service for the day or curtailed their available routes.

The Fairfax Connector bus in the Virginia suburbs will not be running Monday due to the weather.

Metrobus has cut its normal 193 routes down to 42 because of “deteriorating conditions and impassable roads on several routes.”

• Matt Delaney can be reached at mdelaney@washingtontimes.com.