Busk-Ivanhoe Tunnel 1891 39.2553 -106.4825 USA https://en.wikipedia.org/wiki/Busk%E2%80%93Ivanhoe_Tunnel Busk-Ivanhoe Tunnel http://www.geonames.org/search.html?q=busk-ivanhoe+tunnel&country= Busk-Ivanhoe Tunnel - GeoNames A tunnel used by the Colorado Midland Railway, beginning in 1891, and later renamed the Carlton Tunnel and used by auto traffic. It later collapsed. yes yes