Recently flew directly over FL 300 and the St. George Island Bridge. We featured FL 300 back in 2017 with a drive over the St. George Island Bridge and a walk on the older structure. I put together a new blog post on Surewhynotnow regarding the aerial overview with a sub link to the drive over the St. George Island Bridge.
https://surewhynotnow.blogspot.com/2019/01/florida-state-road-300-and-st-george.html