SAN ANTONIO -

The San Antonio area woke up to a glaze of ice Friday, making travel dangerous and prompting many school districts to cancel or delay the start of classes.

"The worst case scenario did come to be," KSAT 12 meteorologist Mike Osterhage said. Mike said about one-tenth of an inch of rain fell overnight, setting the stage for an icy situation.

Several freeways were open Friday morning, but traffic was congested and motorists were urged to stay off the roads if at all possible.

"It's not a good idea," Robert Dart, a KSAT 12 traffic reporter and San Antonio police detective, said about the idea of driving.

At the I-10 & Loop 410 interchange, several cars were trapped in the overpass due to an 18-wheeler that jacknifed on the overpass. The situation was similar in the overpasses at Highway 281 @ Loop 410 and Loop 1604 @ Highway 281.

Transguide Traffic cameras showed dozens of motorists stuck in traffic.

More than a dozen traffic accidents were reported in San Antonio at 6:30 a.m.

The icy weather also affected travel at San Antonio International Airport, with numerous cancelations reported.

City of San Antonio employees were expected to report to work at normal business hours while Bexar County offices were delayed until 10 a.m.

According to CPS Energy, there were 73 outages affecting 4,635 customers at 6:45 a.m.

A winter weather advisory remained in effect until noon Friday for the San Antonio area. Most of the wintry precipitation moved east of San Antonio, but with temperatures expected to remain below freezing until late morning or early afternoon, roads were expected to remain icy.

Despite the icy conditions, the Cowboy Breakfast fired up the grills and were ready to serve tacos and hot coffee to folks who braved the elements and bundled up for the tasty event.