Maryland Transportation Section 8-648

      Any new or replacement storm drain cover, installed on a street or highway in the State, after January 1, 1980, shall consist of:

            (1)      Bars running perpendicular to the flow of traffic on the highway;

            (2)      A grating composed of intersecting bars; or

            (3)      Other designs approved by the Department of Transportation which meet safety design criteria as well as engineering and structural design demands.