Celebrate the 35th Anniversary of the Eisenhower Tunnel with the Museum's latest exhibit, Colorado Tunneling. The exhibit will feature modern tunneling methods with photographs of transportation and water tunnels constructed throughout Colorado. Temporarily on loan from the Colorado Department of Transportation (CDOT) is a scale model of the construction for the Eisenhower Tunnel. The Kiewit Construction Company is loaning a scale model of a state-of-the art tunnel-boring machine. The exhibit is organized by Dr. Raymond Henn of Lyman Henn, Inc., in Denver and will run through August 30, 2008. $8 Adults, $7 AAA/Military, $6 Seniors/Students, $4 Children 3-12.