Louisiana, or Los Angeles? We live close to Los Angeles. If that's your destination, you will be traveling over a mountain range no matter which interstate you choose. If memory serves me, you traverse one in Arizona around the ShoLo area on the 10 I think, and you go over some on the 40 in the Flagstaff area....2 that I can think of off the top of my head. HTH.
Sharon & Bob: TS 2006 40DS04 (King)
toad~ 2004 Jeep Grand Cheroke
Ben, Loki, Sunny... the kittah crew