That is one famous underpass. Construction is or will start to change that. Soon, no more taking the top off trucks.
Always look for truck routes, if sign says NO trucks ? only take truck routes. Usually a good atlas will show your staa routes trucks can take. Not all gps are 100% accurate. Truckers path is 9.99 a month.
That's that low bridge in Durham that literally has its own website? You dont even need a trucker GPS or an atlas for that one. You just need to notice any one of the 50 warning signs, the blinking lights, and the yellow caution signs plastered all over the bridge and turn right or left.... ... ... If you still drive under that one, I don't even know what to say. Except maybe "you're fired."
Where in Houston? You should be starting from the east side, preferably from the outside or near the i610 loop. There is an overpass that I would be worried about right smack in the middle of the city on i45. 14’6 shouldn’t be an issue, except when you get into Mobile AL. They will probably route you cross i10 to i65 north to i165 south across US90 east around the tunnel. If you miss 65 and jam that boat into the 10th street tube, you’ll probably be on the national news with your mug shot. I would think that pulling a 14’6 tall, this isn’t your first rodeo…well, I hope it isn’t.