Police reopened a section of U.S. 20 in LaPorte County on Wednesday after icy conditions brought traffic to a standstill.

Semitrailers were unable to gain traction, causing significant backups in both directions on U.S. 20 between Ind. 39 and Ind. 2, the LaPorte County Sheriff's Office said.

Icy conditions also were reported across northern Porter County.

Semi driver injured after losing control, jack-knifing on slippery I-65 near Rensselaer

Indiana State Police responded to multiple slide-offs and spin-outs on Interstate 94 in LaPorte County, from the Michigan City area to the Michigan state line.

Drivers reported hazardous conditions on Ind. 49 north of Valparaiso and along U.S. 6 in Porter County.

A semi jack-knifed northbound Interstate 65, about two miles north of the Remington/Rensselear exit, about 5:30 a.m. The driver suffered a non-life-threatening injury, and police shut down the northbound lanes for more than two hours for cleanup.

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The Indiana Department of Transportation warned roads throughout the northern half of its Northwest District were "a slushy, slippery mess."

Dozens of snowplows were out, but drivers should slow down and allow extra travel time, INDOT said.

The light snow and flurries were expected to taper off Wednesday morning, but untreated roads could be icy and drivers should anticipate longer travel times, the National Weather Service said.

The next chance for snow is Thursday afternoon, when 2 or more inches could fall. Chances are greater in northern parts of Lake and Porter counties, forecasters said.

Temperatures were not expected to rise above the low 40s all week.

Gallery: Winter in the Region