Eisenhower Tunnel (www.dot.state.co.us) By sara15951 Oct 3, 1967 Straight Creek Contractors won bid of $54,140,486 Mar 15, 1968 Construction began on the westbound bore Nov 9, 1972 60 miners walked off the job when Janet Bonnema, the first woman ever to be employed on a tunnel project, showed up for work. Mar 8, 1973 Westbound bore completed Mar 8, 1973 Tunnel opened for public use Aug 18, 1975 Construction began on eastbound bore Dec 21, 1979 Eastbound bore completed and opened for public use
