AMP: 278
Location: I-90 and MT-2, Gallatin Cty
Reassurance shield after the 2/205 interchange as we pass by Three Forks, so named as this is where the Madison, Jefferson, and Gallatin Rivers merge to form the Missouri River.
AMP: 287
Location: I-90 and S-288, Gallatin Cty
In a mile, we’ll approach Secondaries 288 and 346.
AMP: 288
Location: I-90 and S-288, Gallatin Cty
Exit for 288, which heads south into Amsterdam, and 346, which heads north into Manhattan.