Abraham Burton Cohen
Abraham Burton Cohen ( March 9 , 1882 – February 11 , 1956 ) was an American civil engineer notable for his role in designing innovative and record-breaking concrete bridges such as the Delaware , Lackawanna and Western Railroad's Tunkhannock Viaduct , the world's largest concrete structure when completed . 
<triplet> Abraham Burton Cohen <subj> March 9, 1882 <obj> date of birth <subj> February 11, 1956 <obj> date of death <subj> civil engineer <obj> occupation <triplet> Tunkhannock Viaduct <subj> Abraham Burton Cohen <obj> designed by