Open in January? Thx in advance

Yes

Yep all year, and one loop in the camp found is open all year

Trails yes. Camping, not so much.

Overall--Yes, it is open all year. Some camping facilities shut down in the winter though.

Only one loop in campground shut down in winter loop A. Day Use open year round

There are places in the park that you can access all year round, but there are ranger station that shut down some down. We always check before we drive up on the web site.