North Texas highways, including I-20 in Palo Pinto and Parker counties, continue to have thick layers of ice creating unsafe driving conditions. Interstate 20 in Parker and Palo Pinto Counties is especially iced over with 4 to 6 inches of solid ice on the roadway. This section of I-20 is very hilly and is extremely dangerous for travel. I-35 through Denton County has several inches of ice remaining on the roadway. Motorists remain stalled near Sanger, however one lane northbound is now moving slowly. TxDOT crews continue to treat these two highway locations with sand and salt to improve traction, but traffic is moving very slowly and must stop often. Freezing temperatures will continue throughout the day with roadway conditions not expected to improve until possibly tomorrow, dependent on weather. TxDOT crews will continue working around the clock throughout this major winter weather event providing salt and sand for traction at bridges and trouble spots. TxDOT crews have been working diligently around the clock to make highways passable, but freezing temperatures continue making it extremely difficult to clear several inches of ice from roadways, bridges and interchanges. All travel is discouraged until conditions improve. The TxDOT Dallas and Fort Worth Districts have had nearly 600 employees working since before this major ice storm hit North Texas. These crews continue to work throughout the weekend toward making roadways passable in 16 counties until the freezing conditions are over. Motorists can obtain travel information by calling 800-452-9292. Road conditions and traffic updates available on Facebook, www.facebook.com/txdot and Twitter, www.twitter.com/txdot.