Ok, I found 2 places that will make them.
www.empirefiberglass.com/products_services.html
Here is the Email I received from Neil Baum
"Hi Bill,
We would have no problem suppling these to you or for you. The safe load on a 30 " span is 600lbs. with a 5 to 1 safety factor.
We would supply these in grit top finish., color green at $150 per pair, size 5' x 1' x 1 1/2" tk. and $120 for size 4' x1' x1 1/2" and shipping included (UPS Ground) for each pair.
Thanks,
Neil Baum"
I bought 1 set (two) of 5' x 1' x 1 1/2" tk. (1 section weighs about 19 lbs)
NOTE: I had to pay by check, they do not take Credit cards.
The specs for 1-1/2" Thick x 1-1/2" Square Mesh x 12" Wide
SPAN
Inches Break Point (lbs)
12 7800
18 5200
24 3900
30 3100
36 2600
42 2200
48 1700
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After doing some math I figured I should have gone with the 2" Thick stuff. (I plan on using the 2" thick stuff for Bridging and the 1-1/2 stuff for sand ladders) So I tried
www.amgrating.com They had a better price for the 2" stuff.
Jim Ho is the person you want to talk to for Amgrating.
Here is the Email I received from Jim Ho
"Bill,
For the 2" grating, If you can use 1' x 4' your price is $100.00 for two..
For 1' x 5', Your price is $150 for two.
Thanks,
Jim"
I bought 1 set of 5' x 1' x 2" tk (1 section weighs about 22.8 lbs very lightweight)
The specs for 2" Thick x 2" Square Mesh x 12" Wide
SPAN
Inches Break Point (lbs)
36 7496
42 5143
48 4300
54 3323
60 2346
Note: The grating will Deflect (bend) long before it breaks. Check out there websites to see some pics. Then run a fork lift up on it.
So far I have only received the 1-1/2 stuff today. I will post pic's later. If you call or email them tell them you want grating for off road use.
This stuff works great if you get stuck! Just jack up your truck and lay the grating under the tire then lower the jack an go! (I use a Hi-lift jack in my front or rear receiver) Ok I'm done.