Originally Posted by reddiver
Took the Gallup route 191 this past Thanksgiving. It is the fastest and the road has been greatly improved. Scenery not so hot but that might not be a deal breaker.
The Highway between Gallup and Shiprock NM is 75% Divided 4-Lane, except for about 35-40 miles of 2-lane while they continue to construct the last part of the Divided Hwy. The Route North of Shiprock is still 2-Lane Hwy.
All of the older Highway Segments across the Navajo Reservation tend to be "rough" - not necessarily 100mi of potholes but rather whoop-ti-doos because the subsurface is Sand / Silt / Clay that doesn't hold a Roadbase too well. Whether Shiprock-Cortez on US491 or Chambers-Utah on US191, you'll want to ensure the Cupboard Doors are Latched...