Bridge across a pond?

The bed of a semi-trailer, ideally a reefer since they use aluminum decking. Should be able to find one for less than 10K and could be as long as 53 ft.

For sale in MS

Not sure how you'd get the hull off or what to do with it though.

Floating dock set up as a bridge?

they make floating dock pods that tie together and you can deck over them LINK

also be aware that within about 2 years that pond will have filled itself in from erosion as the dirt slowly melts and settles to the bottom and fills in the deepest spots and it will only be 10-14ft deep at best so there is also the option of waiting to do the bridge in about 4-5 years

if it were me i would drive telephone poles in for the pergola building and then use the floating dock pods to make the piers leading out to it

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It would only have to support the weight of the lumber that I would deck it with and the weight of a few people.

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I would strongly consider a cable or rope suspension bridge for this application, not only easier to DIY and cheaper, it would look cool as hell.

Plenty of plans on small scale suspension bridges online and kits avalable.

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I know many people do it, but the soil testing company I used said that if the soil has enough clay to hold pond water, it has too much clay to build a house on.

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This has absolutely nothing to do with the question that was posed. Don't know how we got here. But, in response, that's bullshirt.

Your response is not really relevant to the bridge over pond discussion and is a bit off course.

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Just letting you know you might want to have it tested before building. I’ll let the certified engineers that did my compaction and plasticity testing know they are full of shite.

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Just letting you know that your statement didn't have anything to do with my original question. It added nothing of value to the conversation which was about a bridge over a pond.

But since we're here now... Compaction testing is required for every foot worth of fill dirt used in building a housepad here. "You might want to have it tested," is a silly statement because it's required to be tested by the permit office.

And, the "certified engineers" that did all three of my compaction tests (98%, 97% and 98% respectively) told me, to tell you, to tell your "certified engineers" that they are absolutely full of shite.