AMP: 342
Location: I-90 and Mission Creek Rd, Park Cty
Reassurance shield after the S-295 interchange
AMP: 353
Location: I-90 and Springdale Rd, Park Cty
1 mile to old S-563. The route is no longer designated a state highway, for some reason.
AMP: 354
Location: I-90 and Springdale Rd, Park Cty
Exit for Springdale Rd as we leave Park County
AMP: 354
Location: I-90 and Springdale Rd, Sweet Grass Cty
Reassurance shield after old S-563
AMP: 362
Location: I-90 and Dehart Trl, Sweet Grass Cty
Reassurance shield after Dehart Trail
AMP: 366
Location: I-90 and I-90 Business, Sweet Grass Cty
1 mile to the US 191 split. 191 follows 90 Business into Big Timber and then resumes its trek northward
AMP: 367
Location: I-90 and I-90 Bus, Sweet Grass Cty
Exit for I-90 Business into Big Timber and US 191 towards Harlowton.