Whole trip:
http://time.com/4878968/total-solar-eclipse-2017-traffic/
http://www.thespectrum.com/story/news/2017/08/16/eclipse-in-utah/553379001/
https://www.fhwa.dot.gov/trafficinfo/eclipse.htm
Utah:
https://www.ksl.com/?sid=45441973&nid=148
http://www.postregister.com/articles/solar-eclipse-news-todays-headlines/2017/08/15/utah-company-develops-1-15-eclipse-traffic (a traffic app, which I got)
Wyoming:
http://www.9news.com/news/eclipse/wyoming-dot-taking-extra-precautions-ahead-of-eclipse/459172808