I'm a non-engineer looking for some guidance-- Will be building a bridge to my house over a creek, and am wondering if a deck made of pressure-treated 4x6's or 4x8's would be able to handle the weight of delivery trucks? They would be over 4 large steel beams with 6" flanges. The beams would be 32" oc, so there would be 26" of unsupported wood between the beams. Will this work? Many thanks for any help
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