Icy roads made for a treacherous commute in northern Utah on Monday morning — and a chance of snow overnight could mean more problems on Tuesday.

All lanes of Interstate 15 were closed at points in Utah County for a stretch early Monday morning. Northbound lanes were closed at Lehi at about 6:30 a.m., UHP reported. A half-hour later, the Utah Department of Transportation announced that all southbound lanes were closed at State Road 92, a few miles north of Lehi.

The northbound lanes reopened at about 8 a.m.; all but one southbound lane reopened by 8:30 a.m., and the remaining southbound lane opened at about 9:30 a.m.

The Utah Highway Patrol responded to 84 auto crashes in Utah between midnight and 10:40 a.m. Monday, most of them in northern Utah, according to UHP’s Twitter feed. Weather was a factor in most of the accidents, UHP said.

At least 17 crashes were reported in Utah County, UDOT reported, on I-15 and on U.S. Highway 6, which was also closed for a time Monday morning. Salt Lake County had another 14 crashes by 7:45 a.m., according to UDOT.

Little Cottonwood Canyon was closed to traffic on Monday morning at about 4 a.m. as crews worked to clear slides from the road and do avalanche control. The road reopened about 9 a.m.

The Utah Avalanche Center reported Monday a high level of avalanche risk in the upper elevations in the mountain regions near Salt Lake City, Provo and Logan.

The National Weather Service on Monday warned of a possibility of snow showers in northern Utah on Monday evening and overnight into Tuesday. The forecast predicted “a weak weather disturbance” would come through northern Utah, and that accumulation of snow in the northern Utah mountains would be minimal.