8.4.4 Ground Level Freeways
Ground-level freeways are constructed in areas of flat terrain, often adjacent to railroads or bodies of water. These freeways should preferably have one-way frontage roads to provide access to surrounding properties.
Ground-level freeway design should minimize the changes in grade to maintain adequate sight distance. While following the existing profile of natural ground, these freeways can be slightly elevated or depressed to create a smoother drive for motorists.