Why not add this bridge detail?
#4
is it at all possible that, due to the slope of the end supports of the bridge, the date is high enough that it is not really all that visible from outside the bridge and conversely, due to the slope of the end supports of the bridge, the date cut into that horizontal plate is highly readable from inside, which is why we have the unusual situation where one must be within the confines of the bridge to be in a position to learn its construction date?

A bit too early in the morning for such etherial contemplation? Ah ... yeah, maybe so. I think I'll go back to bed!
biL

Lehigh Susquehanna & Western 

"America will never be destroyed from the outside. If we falter and lose our freedoms, it will be because we destroyed ourselves." ~~Abraham Lincoln
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