DALLAS -- The National Weather Service says motorists are "strongly discouraged from driving" in North Texas through at least Monday morning as local transit agencies continue to have problems offering regular train and bus services.
At DFW Airport early Sunday, a spokesman said several runways had reopened following the cancellation of more than 400 flights. An estimated 2,000 people slept in DFW terminals Saturday night.
Airport officials said they were equipped to deal with snow, but not the thick ice that formed over the last several days. Rising temperatures Sunday morning will thaw the ice so that it can be cleared.
Highway officials also discouraged travel on Interstate 35W north of Fort Worth and on I-20. Some freeways in Tarrant County are are being shut down temporarily to give road crews more room to work safely.
The Texas Department of Transportation is using graders with special blades to help break up the "cobblestone ice" on area freeways.
The National Weather Service extended a Freezing Fog Advisory until noon for much of North Texas. Freezing fog reduces visibility and can deposit an additional thin layer of ice on road surfaces.
About 75,000 customers remained without power in the Dallas area late Saturday night, down from 105,000 earlier in the evening.
Closer to Houston, overpasses and bridges in College Station and in Colorado County caused issues for more than a dozen drivers involved in wrecks late Saturday.