AMP: 0 Location: Buck Bridge Rd and US-87, Carter, Chouteau Cty No reassurance shield as S-564 begins. 564 is unpaved for its entire length. AMP: 5 Location: Buck Bridge Rd and Whoop-Up Trl, Chouteau Cty About five miles later, we’ll cross the underwhelming Buck Bridge over the Teton River. AMP:  6 Location: Buck Bridge Rd and Whoop-Up … Continue reading Montana Secondary Highway 564, US-87 to S-223