If you do not have a car, there are two BC Transit options available in and out of Witset.
A BC Transit bus travels between Smithers and Witset twice daily, six days a week, on the following schedule:
A second bus to Witset begins its route in Kispiox, passes through the Stikine regional district, including the Hospital, and then stops in Witset at Loop Road. This bus then carries on to Smithers.
There is also a BC Transit service that covers all of northern BC on the following schedules.
You can download a PDF of the schedule here.