Jun 28, 2011 · The main mponents of Ford’s bridge includes [1] ncrete abutment, [2] steel I-bea, [3] pressure-treated 4×12 stringers, [4]pressure-treated 4×12 decit, [5] pressure-treated 2×12 runners and [6] pressure-treated 4×6 curbs. Admittedly, there are good reasons for many of these regulations. In fact, I live downstream from the property