HEIGHTS AND DEPTHS Height of Main Towers above Water552 Ft168.25 Meters Maximum Depth of Water at Midspan295 Ft.90 Meters Maximum Depth of Tower Piers below Water210 Ft.64 Meters Height of Roadway above Water at Midspan199 Ft.61 Meters Underclearance at Midspan for Ships155 Ft.47 Meters 3 more rows