Staying in Rafter J Bar in Hill City this week. Heading up US85 to Medora next week. I am wondering about towing north through Spearfish Canyon (14A) on my way to Belle Fourche. My outfit is in my sig...
There is absolutely no problem taking the canyon. It is maybe 5 miles out of the way, and it is an easy downhill all the way from 85 to Spearfish. The speed limit is 35, so it is not a fast drive anyway.
I don't know what your rig is, but the road is used by semis, logging trucks, and rvs, so you will be fine.
I just checked Google, and it is 6 miles further to Belle Fourche via Spearfish Canyon as opposed to going through Deadwood to I-90.