One of my favorite drives in Colorado has always been through Glenwood Canyon down Interstate 70.  Not only is the scenery absolutely stunning, the Colorado River magnificent, but as an engineer, the design of the 12.5 miles of highway made up of bridges, viaducts, and tunnels truly is a modern marvel.  Earlier this week (Monday, March 8th 2010) a rock slide closed the highway.  This rock slide not only put debris on the roadway, it also punched holes through the bridge decking.  The Denver Post has some magnificent pictures of the damage and the cleanup work.  Check them out HERE.