I have travelled US-83 from North Platte, NE to I-90 multiple times in my motorhome ...
No low bridges ... lots of green pastures with range cattle in the Sandhills of Nebraska ... it is quite a distance between towns (so check you fuel)
North Platte has a Love's & Flying J, rv parks, restaurants, Buffalo Bill State Park.
Valentine is sort of an oasis ... pine trees ... there are restaurants, fuel stations, rv parks there.
There is a native American casino just north of the Nebraska/ South Dakota line ... if that is your thing.
2004 Winnebago Journey 39W - 2012 Buick Enclave
Present @home Home: Oshkosh, WI
We call our rig "Ernie the Journey"