I-90 West - Exit 437
I-90 west at Exit 437 - BL-90/East Laurel. This is the eastern end of the Laurel business loop.
I-90 East Exit 437
I-90 east approaching Exit 437, South Frontage Road, 1 mile.
I-90 East - Exit 437
I-90 east at Exit 437 - South Frontage Road. This is the eastern end of the Laurel business loop.
Begin BL-90 West at I-90 West
Begin BL-90 West at I-90 West to Butte (first left). Use second left for BL-90 to East Laurel.
I-90 west approaching Exit 437 - BL-90/East Laurel.
End BL-90 East at South Frontage Road and I-90 East
End BL-90 East at South Frontage Road and I-90 East to Billings.