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[paul]

I am making a map for an event that spans part of US-1 in the Florida Keys area. I would like to reference to the official highway mile markers, and am wondering where I can find a shapefile or coordinates of mile posts. I realize that using automated linear referencing can get me "close", but a dataset of the physical mile markers would be preferred. I have done a web search, and haven't found anything yet. Thanks for any help!