Removing Posts from Beam
I need some help in sizing a beam for my existing deck. The deck currently extends approx 25' from the house and is supported by 3 trippled 2X10 beams supported by 6x6s every 10'. The beams are 8' on center. The deck is freestanding so there is no leger board. I would like to park a trailer under the deck but to so I would need to remove the center beams posts. What size beam would I need to support the center beam. I would like to go the full 16' to the other posts, but if that's not possible what would the maxim span that would not required an engineered beam.
Thanks for you help