Not sure how KY is on getting roads cleared. Depending on when you are traveling thru Nashville, avoid doing so during the weekdays 6:30 AM-9:30 AM and 3:00 PM-6:30PM. Even in good weather going south on I-65 to I-40W thru downtown traffic is terrible. If there is any precipitation falling or an accident or road construction, all bets are off, almost total gridlock, to me way worse than Atlanta.
You might bypass downtown by taking TN-155 Briley Pkwy West from I-65 and follow it to I-40 west. It's a pretty decent highway, almost like interstate, with just 2-3 interchanges, no bridges with height problems.
Tom, Kathy & Sandy (Goldendoodle)
2017 Thor Citation Sprinter 24SS
2019 Ventana LE 3412, Freightliner XCR, Cummins ISB6.7, 2014 Honda CR-V FWD