WOW!.......this poor bridge has been rode hard and put up wet!
Appears to be skewed.....in more ways than one!
I agree with Robert about the date....looks more ca. 1890 to me. Perhaps the date given was for a relocation.
Would be a cool span to save, but would almost certainly require dismantling the trusses for repairs.
I suspect that this bridge is older than 1918. Pin connected trusses had fallen out of favor as riveted trusses became more popular. The portal bracing makes me think that the bridge could have been built in the 1880s or 1890s.
Yikes! Looks like you got there just in time.