In or about 1998, a wide/high load was being escorted through Nashville on I-40. There was a sign warning of the low clearance on the next three or four overpasses. The truck was escorted after midnight at a slow speed by the THP. They cleared the first two, but scrapped the third. The city was going to sue the truck co. for damages, but the court threw it out. Turns out, the highway had been re-surfaced so many times the height was about 8 inches less than what was posted.
On the east coast there are a number of parkways with older stone bridges and about 10' clearance. There is one that parallels the 95 in Connecticut that comes to mind, i think it runs north to New Haven. Beautiful, but low clearance.
I also remember one, I think in Florida, which had an 11' something clearance in the outer lane. Middle lane was over 12'
Currently planning for retirement.....planning to build a small home in Nova Scotia for summers and someday year-round. Trying to sort out a good way to spend winters in central Florida as I can't drive anymore.
Any Truck stop will have a book, I'm not sure just what the title is but if you ask at the fuel counter for the "Low Bridges" book, they should know what you mean
It lists the height for any bridge under so many feet and inches (I think 14'6" but am not sure)
One thing you need to know... Many parking structures will have a sign, often on a hanging pipe, that says something like "Clearance 12 foot"
The pipe, however, is hanging at 11 feet
Last time in Las Vegas the couple parked next to me had flown in to pick up a brand new Class C, The dealer picked them up at the airport and drove them to the lot, gave them the delivery tour and they came over and hooked up next to me. NO TOWED since they flew in.
Well.... They decided to go to dinner down at Sam's Town and the sign on the pipe said they had room to park in the structure so in they went.. The Class C had one of those "Flying saucer" TV antennas on it's roof, HAD being the operative word here, the pipe slid right under it and tore it all to..... Pieces, then it sprang up (since it's hanging on chain it can do this) and came back down..... Right on top of the bathroom vent cover.
Brand new class C, Sticker still in window, Big gaping hole in the roof, TV antenna all covered in duct tape. Vent cover smashed, Sticker still in window.
Home is where I park it.
Kenwood TS-2000 housed in a 2005 Damon Intruder 377
There is a software program called CoPilot that runs on your computer. Has GPS also. First developed for truckers w hight limits included. Their RV edition also has hight limits included. I use it with my home computer to plan out a route for our trips.
Bill & Sandy
Beaver Patriot Ticonderoga 2001 w Cat 330 & Sterling tow bar
Jeep Grand Cherokee 2004 - Toad w M&G brake system & Roadmaster System
Lilly, German Shorthair
There are several publications at truck stops that give clearance and restrictions. On the main highways I have not seen an overpass under 14 ft. However, on back highways and exits 12 ft is not uncommon. Another problem is that hight markers on older overpasses may not take into account road thickness after repaving. If you are really 12 10, I wouldn't even try 13, and I might be real careful with 14.