Pennsylvania Turnpike discontinued use of several tunnels. They built four lane tunnels in their place. Now privately owned, walkers and bikers can use them. The scout troop has camped nearby. Something different for the biking scouts.
Iowa's newest and most useless tunnel. Out in the middle of nowhere. Goes under a gravel road that probably has a traffic count of under 10 vehicles per day. My guess is someone with some influence and no bike handling skills crashed their bike there (or a friend did) and it got put on a budget.