Don't know about that one, but a lot of the Walmarts are putting up those poles with cross beams to keep MHs out of the parking lots. Sometimes you have to find the way the trucks go in if you are wanting to purchase something there. After awhile last summer of finding the blockades, we decided the stores didn't want our money and went elsewhere. The book 'Next Exit' would tell us what stores were at the different exits. Most of the time, I was wanting to buy produce, maybe some meat, or paper supplies, but we would also like to add to our DVDs, books, magazines, or maybe some clothes.
The best thing is to get the special Atlas with the WalMart stores listed and call them.
NOTE: Make sure you know what your height is for those barricades as well as bridges.