364.15  Changing grade of streets.
  If a city has established the grade of a street or alley, and any person has made improvements on lots abutting the street or alley according to the established grade, and afterward the grade is altered in a manner to damage, injure, or diminish the value of the improved property, the city shall pay to the owner of the property the amount of such damage or injury.
  If a city has opened a street or alley, and any person has made improvements on lots abutting the street or alley or uses such street or alley for ingress or egress, and afterward the street or alley is vacated causing damage or injury or loss of access, or diminishing the value of the improved property, the city shall pay to the owner of the property the amount of such damage or injury.
[C73, §469; C97, §785, 786; C24, 27, 31, 35, 39, §5953, 5954; C46, 50, 54, 58, 62, 66, 71, 73, §389.22, 389.23; C75, 77, 79, 81, §364.15]