<https://www.americanroadmagazine.com/forum/topic/1933-building-the-illinois-national-road/>
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"Do you all remember a few years ago when I explored the abandoned brick and concrete National Road across a large portion of Illinois?  Some of it is in good shape: \n  \n\n\nAbandoned National Road by mobilene, on Flickr\n \nSome of it isn't:\n \n\n \n\nAbandoned National Road by mobilene, on Flickr\n \nWell, I just won on eBay a set of seven little photographs showing this brick road being built.  I am guessing this happened in the late 1910s or early 1920s.  Here they all are, in an order that tells the story of the construction.\n \n\n \n\nBuilding the Illinois National Road by mobilene, on Flickr\n \n\n  \nLook at the tar they're spreading onto the concrete pad on which the bricks sit. Everywhere I explored the road where the bricks are coming up, there is no evidence of this tar. Makes you think the tar was part of what held the bricks in, and when it eroded away, the bricks became loose. \n  \nIn the photo below, the sign hiding partially behind the Caterpillar mentions that Brazil, IN, is 32 miles away. That places this construction at about Marshall, IL. \n  \n\n\nBuilding the Illinois National Road by mobilene, on Flickr\n \n\n \n\nBuilding the Illinois National Road by mobilene, on Flickr\n \n\n \n\nBuilding the Illinois National Road by mobilene, on Flickr\n \nHere's the crew coating the laid bricks with something.\n\n \n\nBuilding the Illinois National Road by mobilene, on Flickr\n \nCoating complete.\n\n \n\nBuilding the Illinois National Road by mobilene, on Flickr\n \nTime for a rest.\n\n \n\nBuilding the Illinois National Road by mobilene, on Flickr\n\n\n\n\n\n\n\n\n"
<https://www.americanroadmagazine.com/forum/topic/1933-building-the-illinois-national-road/?tab=comments#comment-17947>