Take I-40 west from your current location, to exit 215B (SR 155, Briley Parkway.) Stay on Briley Parkway all the way around the north side of the city, until it intersects I-40 on the west side at I-40 mile marker 204.
Far better than any other route--a few more miles but much less headache.
Single empty-nester in Middle TN, sometimes with a friend or grandchild on board