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PITTSBURGH (KDKA) — The extreme cold is starting to cause problems for the Port Authority.

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According to officials, many of their outdoor ConnectCard machines are having issues.

The Port Authority says most of the machines located outdoors have been taken offline due to the lingering, bitterly cold temperatures.

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The machines have an internal heating system, officials said, but it is not effective in these record-breaking cold temperatures.

Port Authority officials say any rider that needs to fill up their cards can ride for free until the system is fixed.

Officials say they have dispatched technicians to look at them.

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Stay with KDKA for the latest on this developing story.