I-80 is the lowest "crossing" of the Rockies ... highest point on I-80 is about 8800 feet just east of Laramie WY (there is a good pull eastbound just before the high point) ... then it is one big long downhill all the way to Omaha, NE.
Watch for storms ... you can encounter strong winds in WY and NE on this route (I have)
There is a great restaurant at Little America ... plenty of parking for your rig ...
Check ahead of time for RV parks that are open. There is an RV park in North Platte, NE that is open year around (Holiday ????) ... I have stayed there summer and early fall ... There are also open RV parks in Altoona, IA (Griff's) and Kellogg, IA ... I have stayed at both
2004 Winnebago Journey 39W - 2012 Buick Enclave
Present @home Home: Oshkosh, WI
We call our rig "Ernie the Journey"