Nothing in this code or the ordinance adopting this code shall be construed as repealing or otherwise affecting the validity of any ordinance:
(1) 
Dedicating, accepting, naming, establishing, locating, relocating, opening, paving, widening or vacating any street or other public way in the city;
(2) 
Relating to municipal street maintenance agreements with the state;
(3) 
Establishing or prescribing grades for streets in the city; or
(4) 
Relating in any manner to street improvements and assessments therefor;
and all such ordinances are hereby recognized as continuing in full force and effect to the same extent as if set out at length herein.
(1977 Code, sec. 19-1)