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Old 10-14-2020, 09:31 AM   #1
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Worst Downhill (or Uphill) You've Come Across

I thought this would be fun. Post the worst place you've gone through in an RV.

For me it was the Teton Pass Highway between Craters of the Moon and Jackson WY. Next time I'll take the more southern route.

I was heading east, and the uphill 10% grade wasn't so bad, likely because it's uphill. The downhill 10% grade was fairly nasty, but perhaps I was affected by my nervous wife.

Map of area:
https://www.google.com/maps/@43.4986.../data=!3m1!1e3

Sign showing grade and duration:
https://www.google.com/maps/@43.4992...7i13312!8i6656
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Old 10-14-2020, 09:47 AM   #2
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Had my buns squinched up a time or two coming down off Monarch Pass many years ago. Was young, didn't know any better, had my Jeep Cherokee behind us with no braking system in place. Wasn't too bad but I remember having to use the brake pedal more than I wanted. Luckily no overheated brakes and needless to say, was sure glad when we reached the bottom.
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Old 10-14-2020, 09:49 AM   #3
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Quote:
Originally Posted by Mudfrog View Post
Had my buns squinched up a time or two coming down off Monarch Pass
Here's a link for that. Does look pretty nasty!

https://www.google.com/maps/place/Mo...4d-106.3255801
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Old 10-14-2020, 10:57 AM   #4
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I did monarch hauling a 28' Carson toyhauler behind my 2500HD. The grades didn't bother me, but the narrowness of the road, especially in the forested sections with no shoulder and no way to stay out of the trees, was nerve-wracking.
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Old 10-14-2020, 11:13 AM   #5
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We did Monument pass this summer and it was by far the steepest we have done. 37 MPH on the way up and around 40 on the way down using the transmission and engine braking with 4 door jeep in tow. Not too bad actually but was by far the steepest and longest grade we've done......although I hear the "Ike" is the worst of them all!!
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Old 10-14-2020, 11:17 AM   #6
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Sounds like Monument is a place I should go if I ever want my wife to either divorce or kill me!
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Old 10-14-2020, 11:25 AM   #7
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The Hogback in Utah on Rt. 12. Two way traffic on two lanes, no shoulder, no guard rail, 1000 foot drop on each side and about a 14% grade! NO PLACE to go in an emergency...

https://youtu.be/OFr0YShDM1E
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Old 10-14-2020, 12:59 PM   #8
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Worst Downhill (or Uphill) You've Come Across

Quote:
Originally Posted by RVThere View Post
The Hogback in Utah on Rt. 12. Two way traffic on two lanes, no shoulder, no guard rail, 1000 foot drop on each side and about a 14% grade! NO PLACE to go in an emergency...

https://youtu.be/OFr0YShDM1E

I’ve been over that route. It’s not as bad as you describe. Wy 16, from Ten Sleep to Buffalo was challenging with a 3500 DRW towing a 13K 5er. The summit is 9,666 feet. Click image for larger version

Name:	IMG_1859.jpg
Views:	18
Size:	260.3 KB
ID:	304674. I should add, this was our first major trip with this truck and trailer. We did gain some valuable experience!
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Old 10-14-2020, 02:04 PM   #9
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The typical Colorado passes all come to mind.

Specifically, earlier this year I had the unfortunate need to come to a complete stop just as we were reaching the Raton Pass summit northbound. Dead Stop in a line of all vehicles including Semis.

The lanes had been narrowed to one by construction. THEN, a disabled pick up truck pulling a flatbed with a classic car on it was pulled in the right lane shoulder. It was wide and took a lot of space (I felt terrible for those folks).

In any case, the resultant narrowness was about 1 inch wider than the width of a Semi Box. Needless to say having to come to a complete stop in this instance for all traffic was less than desirable.
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Old 10-14-2020, 03:43 PM   #10
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Arthur’s pass, Highway 73, New Zealand. 25 years ago I rented a 9 meter RV and drove around the Southern Island. I don’t think we were supposed to take highway 73 but it was an adventure with some grades up to 16%. It had a 5 speed manual with a tiny 4 cylinder diesel. I remember one incline where it started chugging in 2nd and I had to run in 1st gear. The line of locals stuck behind me were not happy as I was going only maybe 20 KPH at redline!
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Old 10-14-2020, 04:39 PM   #11
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NE entrance into Yellowstone.
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Old 10-14-2020, 05:41 PM   #12
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NE entrance into Yellowstone.


Yes, the Bear Tooth, especially in winter.
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Old 10-14-2020, 07:25 PM   #13
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So many hills, so little time

Hmm, worst downhill in a safety sense would be us going down the Cabot Trail in Nova Scotia 3 years ago. The road was under construction and paved only with course 2" to 3" stones, loosely packed. I guesstimate the downgrade at 10-12%, with a slight curve to the right, and it was raining and foggy that day.

We had to inch down in 4WD and the 5th wheel kept getting loose. I had the 5th wheel sideways by about 2' for a 50 foot section. I had to feather the trailer brake controller and accelerate to keep it under control. Not a fun ride for my GF!

Worst as far as grades was leaving Manic5 dam in northern Quebec and heading through Labrador. It's a 22% or 23% grade but quite short. It also is paved in coarse, loose gravel. I had to use 4WD lo as I didn't want to burn the trans or anything.

A lot of steep uphills and downhills on the road around Gaspésie Quebec last year. Really poor planning has speed limits reduced from 90 km/h at the top to 70 km/h midway down, with a sharp curve at the lower section welcoming you to a reduced speed of 50 km/h or even 30 km/h at the very bottom, almost impossible to accomplish for most heavy vehicles. The southbound approach to Gaspé is one of the worst.

The Ike Gauntlet is decent too, one of the longest downgrades we've done but at least it is paved, it has runaway ramps and felt "controllable" in worst case scenarios.

Highway 1 from LA to San Francisco was memorable too. I think we exceeded the length limits on some sections but safely managed some steep grades combined with very sharp and tight turns. We even managed a U-turn that was forced by a road collapse.
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Old 10-16-2020, 08:03 AM   #14
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I've been through most of the states, and the eastern and western Canadian provinces.

Since the question is about worst uphill/downhill I'll just comment on that....

I always remember the long uphill pull from Bear Lake, UT over to Logan, UT on US89. I don't recall a worst, but that pull always goes to mind.

The other one that comes to mind is US24 between Nashville and Chatanooga. That uphill and downhill (especially the downhill) at Monteagle is a pretty long grade. Lots of runaway ramps on the downhill side.
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