None of it is perfectly bike friendly.
Whenever I ride out there I basically follow Rt 60 the whole way there. West End Circle -> Noblestown Rd -> Through Crafton -> Steubenville Pike into Robinson.There are a couple of different options in Crafton, but they all end up with varying degress of no-shoulder, high speed traffic situations. Noblestown isn't bad at all, and neither is the descent into Crafton. Steubenville Pike couldn't get much worse, and I never found the alternate Campbells Run much friendlier, just not as steep.Criss-crossing the 79 interchange ramps on Steubenville Pike also is a bit hair-raising at points.