How much would it cost to build a section of this steel trestle frame?

Can anybody tell me the approximate price for a steel trestle frame like in the attached pics?

I would need it approx. 6 metres tall, 10 metres deep, and 20 metres wide, and only sitting on footings, not a cement base. I also don't need any of the signage, just a solid frame.

I would need it done up in the far north east, if that makes any difference to the price.

Thanks in advance for any helpful info.