Check out this installation of a 14′ wide x 20′ long Timber Bridge, supplied in 2 pieces. The installation was accomplished with a bridled lift at the integral lifting plates, clevis’s are included, into the left and right position.  The 2 pieces are placed together and lined up, then a 14′ rod slides through the deck and is tightened to ensure the decks stay together (and square). In this design the bridge deck is engineered as a “large flat panel” where the timbers are all “tied” together. So in the case of a heavy load the timbers act as “one”. In other words a 7′ wide flat beam that won’t shear. As usual the hard part on this installation is the abutments, which in this case was a poured concrete beam. Sometimes you can use gravel  and lock blocks or treated timber base mats. Nice installation here! Will provide access over this small fish bearing creek to another field.