76. No ratepayer of a territory detached or separated from a local municipality is obliged, under any procès-verbal, act of apportionment, by-law or order, in force at the time of the alteration of boundaries, to perform work upon municipal roads, bridges or watercourses up to that time deemed to be local, and situated in the remaining part of the local municipality from which such territory has been detached or separated.
The same rule applies to the ratepayers of any local municipality from which any territory has been detached or separated, respecting works of a similar nature situated within such territory.