Interstate 15 Business, US-12 to S-229


AMP: 43

Location: Lyndale Ave and Main St, Helena

As Business Loop 15 joins, we’re told to stay straight to go to it for some reason, and then also stay straight for 12 east.


Location: Lyndale Ave and Montana Ave, Helena

A few blocks later, we’ll approach S-229 (again, for the business loop). Keep right to stay on US 12. Montana Ave northbound is S-229, and there’s actually no access to 229 northbound from here.

S to I-15/US-12/US-287, N to S-229

E to I-15/I-15 Bus/US-287, W to S-356

N to I-15 Bus

E to S-229, W to S-356