Not as a general rule. They are placed on the property to ensure that access is always available for sewers, right of ways, power etc.
Were you aware that the property had an easement when you did your property search?
Making the $50 a penality is NOT legal BUT you can reverse it. ie. The notional rent is $240 per week but you will offer a discount of $50 per week IF it is paid/recieved/cleared by the due date.