Throwback Thursday

Here's a throwback to 1968.  Check out these brave construction workers walking a tightrope without a safety net.  They're working on an I-635 overpass in Kansas City.  We want to give a big thanks to highway workers past and present who put themselves at risk to build and to maintain our infrastructure.  (Note: The top photo is from November 1968 and the bottom is from July 1968.)