AMP: 0
Location: York Rd and Canyon Ferry Rd, Helena
No reassurance shield at the beginning of the York Rd as we head out of Helena. 280 is unsigned from the mainline.
AMP: 15
Location: York Rd and Black Bear Rd, York, Lewis and Clark Cty
15 miles later, we’ll enter the little community of York, which is basically a bar. 280 ends here.