Snow and sleet glazed roads in much of the plains and upper Midwest, causing a flurry of traffic accidents blamed for at least four deaths and making even walking dangerous in some areas. A car spun out of control on an icy bridge near Phillipsburg, Kan., ran off the road and came to rest in a clump of trees, police said. Two passengers were killed and three were injured. In Havensville, Kan., a 79-year-old man and his wife were killed when their car skidded while going down an icy hill and slammed into an oncoming pickup truck. Freezing rain slicked down roads in northwestern Wisconsin, parts of Iowa and southeastern Minnesota, including Minneapolis-St. Paul. Authorities in the Twin Cities said one pedestrian suffered a broken arm in a fall on an ice-glazed sidewalk. Snow fell in Nebraska, Kansas, Iowa and South Dakota, with parts of Nebraska getting up to nine inches of new snow, but only a few minor accidents were reported.