The grandfather was driving his two grandchildren, who were taken to the hospital with non-life threatening injuries.
According to Fairchild VFD's Facebook page, Seth Farquhar was off-duty at the time of the accident.
Farquhar is said to have sustained significant injuries, breaking his arm and leg along with significant internal bleeding from major vein damage.
After surgery, he was listed in critical condition.
Roads in the area have been reopened.