https://www.google.com/maps/dir/Heckscher+Dr,+Jacksonville,+FL+32218/30.4121945,-81.5647058/@30.4015663,-81.5111267,14z/data=!4m8!4m7!1m5!1m1!1s0x88e5b05065116417:0x1711de71843080c4!2m2!1d-81.6574959!2d30.4084751!1m0 https://www.google.com/maps/@30.416115,-81.54142,3a,75y,52.55h,83.87t/data=!3m4!1e1!3m2!1sgDAauDYSbK_lfUW0FcC19A!2e0 After 9 miles of travelling through marshland, SR 105 intersects SR A1A, which crosses the St. Johns River via the Mayport Ferry.