This following post and it's content is rated SAFE FOR WORK, and is viewable by any and all audiences and age-groups. For all you highway / road-builder buffs out there, I want you to get some tea (or your drink of choice), and sit for 15 minutes and watch this great 1961 film on "The National Defense Internet Highway System" If you liked that, you'd also be interested in this also-safe-for-work video about 'Building The Pennsylvania Turnpike', viewing time is just over 23 minutes on this. There's even an abandoned section of the PA turnpike, which I may make a map out of one day, though it's out of the scope of the video (the tunnels are covered, the video predates any abandonment). These videos are just a little special treat for folks who subbed this thread / topic. I love old videos, and I do still learn things from them now and then. More updates may be posted tomorrow or Friday on this map (not 100% sure). --Cheers!