viaduct		to carry,to bring
inference		road,way
impervious		unable to be affected
confer		to increase greatly in number
deviate		A conclusion not directly provided by evidence, but able to be drawn from the facts at hand
deference		a bridge that carries a road or railroad over a valley
obviate		to make unnecessary;to avoid
defer		1)to put aside until later 2)to yield respectfully
proliferate		to depart,especially from a path or plan
VIA		1)to discuss something with someone else;consult 2)to bestow
FER		act or practice of yielding to another's authority