AMP: 16
Location: I-90 and WYO 339, Sheridan Cty
Reassurance shield after the WYO 339 interchange
AMP: 19
Location: I-90 and Main St, Sheridan Cty
Junction I-90 Business coming up in 1 mile, which serves downtown Sheridan
AMP: 20
Location: I-90 and Main St, Sheridan
Exit for I-90 Business. Although not marked (an oddity for Wyoming), the route will carry mainline US-87 South as well as Business Loop US-14- the routes are marked from the route itself, just not here. US-14 is likely not marked to prevent confusion, since 14 will split from I-90 south of Sheridan, and US-87 is likely not marked for who knows what reason.