The Overseas Highway spans more than 126 miles and has 42 bridges connecting the islands

 
 

 

 

Mile Marker 116 to Mile Marker 91. 

 

 

Islamorada

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Mile Marker 90.9 to Mile Marker 71.9

The Middle Keys

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               Mile Marker 71.8 to Mile Marker 47.                       Ends at the south end of the 7 Mile Bridge

The Lower Keys

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 Mile Marker 47 to Mile Marker 5 

Key West

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 Mile Marker 5 to Mile Marker 0