AMP: 167
Location: US-12 and US-87, Musselshell Cty
Reassurance shield as 87 joins 12. The two routes will concur into downtown Roundup.
AMP: 168
Location: US-12 and 7th St, Roundup
A mile or so later, we’ll enter Roundup.
AMP: 169
Location: 1st Ave and Main St, Roundup
As we enter Roundup, we’ll need to turn left to stay on the highways, using 87’s control city of Lewistown to remind us what to do.
AMP: 169
Location: 1st Ave and Main St, Roundup
Another sign at the left turn.
AMP: 169
Location: Main St and 7th Ave, Roundup
After turning left, we’ll enter downtown Roundup and the highways will prepare to split.
AMP: 169
Location: Main St and 8th Ave, Roundup
Stay straight for 87 north towards Lewistown. Turn right to stay on 12 east towards Forsyth.