
Originally Posted by
AZBuck
Let's start with some basic truisms and then move onto a few specifics.
Truisms: Interstate Highways were never meant to be scenic routes. I-10 will not get you within sight of the Gulf except as you cross bridges in Mobile and Pensacola where you'll be able to glimpse their namesake bays. Neither I-75 nor I-95 will get you within sight of water. I-95 down the Atlantic Coast of Florida can be a nightmare as it's pretty much just one city after another and the highway tends to run on the landward side of all those cities. Overall, your basic route is about as flat as you can find anywhere, with no mountains or even modest hills to break up the monotony.
A few specifics: As to your question regarding I-75 or I-95 south through Florida, I would suggest neither. I mentioned the 'difficulties' with I-95 above. I-75 is good as far as roughly Orlando's latitude (but don't go into Orlando). After that, I personally would be looking at US-27, reachable from I-75 via either Florida's Turnpike or FL-44. US-27 rejoins the interstates around Miami, but there's also the option of using FL-997 from around Miramar down to Homestead and picking up US-1 over the keys. US-27 is a multi-lane divided highway that mostly ties together several retirement towns. While it's not as scenic as you might like, it's likely to be better than trying to negotiate Tampa/St. Pete or Miami and all the other coastal 'resort' cities.
I think that the best scenery available to you on this trip will be at wildlife refuges along the way. These are designed to be accessible but away from crowds. For example, you could leave I-10 at Stowell TX and head for Port Arthur on TX-73/TX-82. The later becomes LA-82, the Gulf Beach Highway then the Grand Chenier Highway, and eventually connects with US-90 into New Orleans. That routing would give you access to the Candy Abshier Wildlife Management Area, the Rockefeller Wildlife Refuge, and the Bayou Teche National Wildlife Refuge among others.
For beaches, at Pensacola you could switch over to US-98 to more closely follow the shoreline to roughly Fanning Springs FL where FL-26 would connect you to I-75 for the start of your leg south through Florida. In the end, though, your best scenery and beaches will be along US-1, the Overseas Highway, from Key Largo to Key West.
AZBuck