I would continue straight in on I-10 to near city center where there will be an interchange directly to US59 (Southwest Freeway) and stay on the Southwest freeway to your destination.
Seems close to the All Star RV park where we have stayed in the past???
I believe this is by far the best route to reach your destination.
Just noticed a BIG assumption on my part: that you will be coming in from the East (Beaumont). If not, I'll have to revise this post.
David and Shirley -- East Texas
2955 RL Montana
Chevrolet Duramax 2500 Allison Trans
http://www.dwilliamson.com/mont.jpg