There is a road just west of Bessemer Mine Road that you can use, last time I was down it it was not too bad, runs parallel to Bessemer. There's nothing that can be done with Bessemer between the HWY and Soggy, its all bedrock as for cutting in a new road just grade the one that's been cut to the west and abandon Bessemer would be my suggestion.
However the crappy road keeps some of the riff raff out. Once you hit Soggy its not too bad up to the Rockpile, then it's pretty whooped beyond that.