Just stay away from I-35 and the flooding this afternoon and evening
Reason #1. This is what northbound I-35 looks like in Murray Co. where it is closed due to the rockslide.
Reason #2. I-35 in both directions may have to be closed at the Texas-Oklahoma border due to record flooding on the Red River.
Of the available choices (which are hardly ideal), U.S. 81 is upstream (west) of the flooding and probably the better choice.