US 89A in Arizona north of Flagstaff (and AZ389 to Utah border)

Hi, has anyone here pulled a 53-foot trailer north from Flagstaff to Utah on US Alternate 89 and AZ389? The regular/newer US89 is closed due to a landslide.

US-89-A and AZ-389 are not highlighted designated routes in the trucker atlas, but they are also not restricted routes and do not have any low clearances or weight restrictions. I've done over two hours of research to find out if trucks are explicitly allowed or prohibited, or even just a state DOT-posted "not advised" for certain lengths, but have found nothing concrete. My Qualcomm wants me to go that way (but you know how Qualcomm is...) but I had planned to go slightly out of route by staying on 89 instead of 89-A, until I found out it is closed. I could just take I-40 and US-93 to Vegas and then I-15 into Utah, but that would add over 100 miles to my trip, putting me over the 10% out-of-route company mandate, and also putting it too close to call on being late. Especially if Vegas rush hour starts before 8 AM.

After extensive Google Maps viewing, the only thing I'm really worried about is two or three switchback curves on 89-A near Jacob Lake, AZ. They would at least be going uphill (they are southbound descents and I'm going northbound, and the northbound descents are all much gentler). I'm not worried about the grades because they seem to max out around 6% northbound descents. Also my load is under 11,000 pounds.


But mostly, I'm just really hoping that before I head out in the morning after my ten, someone who has driven these roads can give me peace of mind and pop in this thread to say it's OK.

Hi, has anyone here pulled a 53-foot trailer north from Flagstaff to Utah on US Alternate 89 and AZ389? The regular/newer US89 is closed due to a landslide.

US-89-A and AZ-389 are not highlighted designated routes in the trucker atlas, but they are also not restricted routes and do not have any low clearances. I've done over two hours of research to find out if trucks are explicitly allowed or prohibited, or even just a state DOT-posted "not advised" for certain lengths, but have found nothing concrete. My Qualcomm wants me to go that way (but you know how Qualcomm is...) but I had planned to go slightly out of route by staying on 89 instead of 89-A, until I found out it is closed. I could just take I-40 and US-93 to Vegas and then I-15 into Utah, but that would add over 100 miles to my trip, putting me over the 10% out-of-route company mandate, and also putting it too close to call on being late. Especially if Vegas rush hour starts before 8 AM.

After extensive Google Maps viewing, the only thing I'm really worried about is two or three switchback curves on 89-A near Jacob Lake, AZ. They would at least be going uphill (they are southbound descents and I'm going northbound, and the northbound descents are all much gentler). I'm not worried about the grades because they seem to max out around 6% northbound descents. Also my load is under 11,000 pounds. And as soon as this route crosses into Utah, it becomes a national designated route all the way to my destination.


But mostly, I'm just really hoping that before I head out in the morning after my ten, someone who has driven these roads can give me peace of mind and pop in this thread to say it's OK.

 

I called the St. George, UT (but Arizona DOT) port of entry and they strongly discouraged me from taking 89A. So kind of a coinflip now between 100 miles OOR on I-40/US-93/I-15 or 70 miles OOR with a lot less freeway but no "real" cities to speak of along 89/160/98.

Thanks, everyone.

 

Good ole Navigo Qualcomm routing, telling me the whole time I shoulda taken 89A. I might not have even put too much effort into confirming that, if I hadn't once followed its directions up (and then back down after I found a place to turn around 40 miles later) CA-74 southwest of Palm Springs. I have no idea how I didn't scrape the rocks on the switchbacks, at the very least.