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1972 Map of Sevenmile Bridge

Name: 1972 Topographic Map of Sevenmile Bridge
Creator: U.S. Geological Survey
Published: 1990
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1990

About this map

Sevenmile Bridge dominates this coastal survey, stretching across the open waters of the Florida Keys to connect a series of small islands between Florida Bay and Hawk Channel. This 1970s orthophotomap provides a clear view of the marine landscape during a period of transition in the Lower Keys, before major modern developments altered these small landmasses. The northern portion of the map is largely occupied by the Great White Heron National Wildlife Refuge, protecting the shallow waters and mangrove keys of the backcountry.

Local landmarks such as Pigeon Key, which features a small Picnic Area, and Ohio Key are clearly defined. The intricate network of tidal passages is documented through named channels like the Missouri Little Duck Key Channel and Ohio Bahia Honda Channel. This specialized map combines traditional topographic contouring with aerial photography, capturing the exact footprint of the Intracoastal Waterway and the relative isolation of Money Key and Molasses Key prior to later decades of growth.