1972 Map of Sevenmile Bridge

About this map

Sevenmile Bridge serves as the structural spine of this 1970s orthophotomap, spanning the transition between Florida Bay and Hawk Channel. This specific survey captures the Florida Keys during a period of established transportation infrastructure, highlighting the narrow landmasses of Knight Key, Pigeon Key, and Little Duck Key as they are linked by the highway. To the north, the protected waters of the Great White Heron National Wildlife Refuge dominate the landscape, characterized by shallow banks like Bethel Bank and isolated outposts such as Coconaut Key. The orthophoto format provides unique insight into the underwater topography and shoal patterns surrounding the keys, including the detailed routes of the Money Key Channel and Missouri Channel. This view is particularly valuable for understanding the maritime geography of the Middle Keys before significant modern expansion altered the coastal fringes.