Sorry Buckethead, but I don't remember who the contractors were. Age-wise, I was still in the single digits back then. Most of the really good projects were either in northeastern Pennsylvania or around the Binghampton, New York area. There was plenty of highway work in both those areas throughout the 60's.
I had relatives that lived in Kingston, Pennsylvania and I remember that the local Euclid dealer was on the street heading into town, just like any other business. Five and dime, dry cleaner, drugstore, Euclid dealer. Made perfect sense then. Someplace I've still got a few photos of me in the dealer's lot standing on the ladder of a wheel loader.
Well, I've kinda got off the topic here. Anyway, even as a kid I appreciated the sound of a couple of unmuffled Jimmys!