Colorado's amazing Eisenhower Tunnel is celebrating a birthday, and it's a biggie. That's right, this unbelievable achievement is turning the "Big 5-0." In honor of its birthday, here are a handful of random facts about the Eisenhower Tunnel.
It goes without saying there are some things you wouldn't want to take through Colorado's Eisenhower Tunnels. In fact, there are a number of things you cannot take through the tunnels at any time.