AMP: 19 Location: S-223 and Brady Rd, Chouteau Cty No reassurance shield after S-564. AMP: 39 Location: S-223 and S-366, Liberty Cty A few miles later, we’ll approach Secondary 366. AMP: 39 Location: S-223 and Ledger Rd, Liberty Cty Turn left for S-366/Ledger Rd, an unpaved highway over to Tiber Dam. Stay straight for 223 north.  N to … Continue reading Montana Secondary Highway 223, S-564 to S-366