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Benkelman, Alvin Carlton Sr. ca 1950's

Alvin Carlton "Benk" Benkelman, Sr. in center briefing a group of visiting engineers. A Chemical Engineering graduate of the University of Michigan, Benk first worked for the Illinois and Michigan Highway Departments as a research engineer. From 1934-1954 he worked for the U. S. Bureau of Public Roads in charge of structural design of flexible pavement. He is well known throughout the highway construction trade for his invention of a economical portable device to measure deflections of pavement under heavy loads which to this day carries his name, the Benkelman Beam.

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