 A rerouting in late 1971 moved the US 45 designation along M @-@ 26 between Rockland and Greenland . From Greenland , US 45 followed Ontonagon – Greenland Road to Ontonagon . In late 1973 , MDOT reversed the rerouting — US 45 was restored to its previous routing on Rockland Road between Rockland and Ontonagon and M @-@ 26 was re @-@ extended south from Greenland to Rockland ; M @-@ 38 was extended west along Ontonagon – Greenland Road . 
