If the ordinance of intention designates any street or portion thereof, the grade of which is proposed to be changed or modified, and there is included in the ordinance of intention any other street or portion thereof, intersecting therewith or terminating therein, the grade of which is also proposed to be changed or modified, neither proposed change or modification of grade shall be barred by any protests unless such protests are signed by the owners of a majority of the total frontage of the property fronting on all such streets or portions thereof where such change or modification of grade is proposed to be made.