For Bega MP Andrew Constance, the memory of the bushfires tearing through his South Coast electorate are still so vivid and raw that it wakes him up in the middle of the night.

The NSW Transport and Roads Minister, who will return to Sydney briefly on Tuesday to speak to a bushfire condolence motion in NSW Parliament, says mental health is devastating his community.

NSW Transport Minister Andrew Constance urged people to donate to Lifeline as bushfire victims struggle to rebuild their lives. Credit:Kate Geraghty

Mr Constance said he feared that the "extreme trauma and anxiety" victims were feeling would lead to suicides as people struggled to come to terms with the catastrophic bushfire on New Year's Eve.

"It's just so incredibly overwhelming but people need to know that it is OK to say this is wrong and we are hurting," Mr Constance, who has temporarily stepped aside from cabinet, said.