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Old 08-03-2016, 09:04 AM   #1
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Road grade listings

Does anyone know of a website or app that tells what the hill climb/descent grades are per state or route? I've got a Truckers road atlas that lists weigh stations, tunnels, etc but it leaves me wanting more.

I have used Google Maps streetview to see the grade signs, but that takes forever to get in the right spot to see the sign.

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Old 08-03-2016, 09:12 AM   #2
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The best I have found is the "Mountain Directory - West for Truckers, RVs and Motorhome Drivers". There is also a eastern version. If you are worried, most states have websites for road warnings. Most of the road warnings seem to be for over 40 feet and over 30,000 lbs, so we don't fit the warnings, but it is always best to check.

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Old 08-03-2016, 09:17 AM   #3
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You can use www.onthegomap.com to check out a route. Use the "Toggle Elevation Display" on the route you've selected. You can see the elevation and grade at any location on the route.
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Old 08-03-2016, 01:33 PM   #4
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We've used the 'Mountain Directory for Truckers and RVers' very successfully in our travels. We love mountain driving but there are some you should not be on.

Naturally, every single road is not listed - just the more popular ones. If there's a particular road in question, just do a 'Google'.

We really don't rely on the trucker's atlas as some roads that prohibit semi trucks are o.k. for RVs. Some towns don't want the trucks coming through.
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Old 08-03-2016, 01:49 PM   #5
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You can see elevation and grades using Google Earth, too
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Old 08-04-2016, 09:26 AM   #6
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Thank you all for the links and ideas.
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Old 08-04-2016, 09:35 AM   #7
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A few year ago I bought both of the Mountain volumes, problem is: I keep forgetting to look at them.
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Old 08-05-2016, 10:11 AM   #8
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AllStays App both truck or camp & RV will show a grade sign on the road you're looking at. If you click it it will give the info both directions. Example Wolf Creek Pass in Colorado it will show 7% for 9 miles W/B but E/B it will tell you there is a level segment after X amount of miles followed by another drop.

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Old 08-05-2016, 06:54 PM   #9
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We have found that most states publish grade info on their highway or dot sites. If you are looking at more scenic routes or passes, just google the highway or name of the pass etc. Bicyclists are very active at rating grades. Motorcyclists have published a ton of video with their go-pro cameras so you can see your route in advance. We just completed 5500 miles, mostly in the mountain northwest, and probably did over 4000 of that on state highways. Roadways are smoother, minimal other traffic, you can actually see the scenery enroute. Lots of 25 and 35 mph curves, but without competing traffic that is easy. We are a 43 ft tag axle plus toad. Not the Porsche of my youth but handles well in the outback,!

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