Finding info regarding bridge heights

It really isn't as much of a problem as many people think it is.
Overpasses on most major highways are designed to allow for the passage of large trucks. ie semis, box trucks, etc.
Locally, we have two "low clearance" underpasses under the railroad tracks. One is 8 feet, clearly posted. The other is 13 ft. 8 inches, also clearly posted.
The 8 foot one used to get one or two trucks or RVs every year. It has been a couple years now with no incidents. Apparently, drivers are learning to pay attention!

The AllStays app lists clearances.
Here's a screenshot from my iPad:

Go to a Loves or other truck stop and get a copy of the Rand McNally Motor Carriers Road Atlas. I got the laminated version. Any road that a standard sized (height, width, weight) truck can travel on is highlighted in yellow. They need 13'6" high so as long as you are less then that, you are good. Just plan out your route using the yellow brick road. I got the laminated version partly because it will last longer and partly because I like to use a dry erase marker to pre-plan my route.

Also, there is a section for each state with a list of all low clearances. Texas is the winner here.

This atlas is great. For some reason, it was waaay cheaper at the truck stop vs Amazon. Weird.

Also, I have the Allstays Low Clearances app on my phone. Very good too. Linked to the phone GPS so it will show your current location every time you start it up.

Old-Biscuit wrote:

Campground roads are more problematic than roadways.
Just pay attention and LOOK UP!

Truer words never written and this along with obstacles along the roads in CGs are 100x more problematic than worrying about overpasses.

Larry

Garmin RV 760LMT GPS. Enter in your RV specs and it will route you around the low clearances. But as with ANY GPS pay attention to the real world..or you may be sorry.

Old-Biscuit wrote:
Campground roads are more problematic than roadways.
Just pay attention and LOOK UP!

Also, train your spotter to look up when you are pulling or backing into a campsite.

I've seen a tree at one campground pull two A/C's off two different 5ers in one week.

I tried to tell both drivers that the tree limb was too low, both said their wife knew how to spot for them, and to mind my own business.

My 5vr is 13'4"

We traveled for 7 yrs FT.........rarely using any Interstates
Most travel was done on secondary & backroads

SIGNAGE
Found that 'signage' was always PRIOR to any low overpass/trestle/bridge ----far enough before to use alt.route.
Only came across a few that weren't clearly marked (bushes/trees over grown---or missed the signs)....and it was obvious that it was too low.
Turned around and went alt. route

Came across ONE that was marked 12'4" (a foot lower than my 5vr) BUT I was committed (no place to turn around as road way merged with road to underpass).
Cars/trucks backed up behind me as I had stopped to weigh options.......
Guy couple of vehicles stepped out of his truck and YELLED......you'll be OK it is much higher/they haven't remarked it since lowering/repaving job. SURE------------

So we approached slowly......cleared by maybe 2" at idle speed.

Campground roads are more problematic than roadways.
Just pay attention and LOOK UP!

The copilot smartphone app will let you customize your vehicle with height weight and propane restrictions then route around the restrictions based on what you put in as specs for your RV. There is also a poi download you can purchase from low clearance if they are stil around , I had downloaded the database of low clearances in my old Garmin dash mount gps . The copilot app is a bit pricy for the full versions I don't recall what The Low Clearnce POI cost but it wasn't that bad if you have a traditional GPS . There are also a few gps units marketed for RV'ers but they are also pricy.

Most roads that you would want to use with a Class A are suitable for big trucks. Unless otherwise noted and signed, bridges and overpasses are 14' usually, although I seen a lot of 13.5 ones. If the truck in front of you gets under it, then you can. Just watch for signs indicating low clearances. And, if you do find one that is posted low, believe the sign, and don't try it. If an overpass has bent edges and lots of scraped paint. go another way.

Here is a web site that gives that info for each state CLEARANCES