HazMat Route - Texarkana to Shreveport

I need to know a route from Texarkana to Shreveport that is hazmat approved. Dispatch uses google maps for our directions so I always have to check and double check the route. I did notice a NO HC sign on my way down there, unable to continue I turned around and stopped at a safe place and called dispatch. Well no call back for quite some time now. So if you know the route I need to take or where I can find it I would really appreciate it. I'm trying to get to Francis Bickham Blvd in Shreveport.

EDIT
Route I used was.
30 to 245 S
to 549 S
to 71 S
to 220 W
to 3132 E (This is where the NO HC Sign is)
to 523 E
to 1 S

EDIT 2
Got a reply on the CB to take Exit 6 on 3132 (Linwood Ave) to 526 to 523 left to follow 523 to 1 but I don't know. Guess I will try it and look for the NO HC signs

 

71 Will take you right into Shreveport but I need to get to the south east part of it, and as a general rule HazMat is not allowed through cities only around. I could be wrong on that but I think only local deliveries inside city.
EDIT
And where I'm going 71 puts me on the wrong side of the river.

EDIT2
This route I got from someone on the CB does not seem to have any HC restrictions but it was dark so I don't know.. Any way I'm done unloading and going to spend the night at this truck stop / casino. See what it is all about. Thanks for the help, and if anyone knows better let me know..

 

Yea I understand that. Arg, this is really frustrating some times. Where am I to find this info before I make my trip? I just got lucky this time.