I thought I'd let everyone know about this Hwy.
We just traveled from Moab, UT to Gallup, NM taking Hwy 191 & 491. It's a beautiful ride all the way through UT and SW Colorado, but from Shiprock,NM to Gallup,NM there is a 22 mile long construction zone, and the highway is like riding over a washboard in many places.
There are warning signs for rough road and they're not kidding!
I would advise an alternate route if you had planned to use that Hwy.
Safe travels!
Pawpaw
2015 Starcraft Autumn Ridge 329BHU
2015 Starcraft AR-One 18QB
2014 GMC w/6.2L & max tow pkge.