Browse Items (14 total) Tags: construction Browse All Browse by Tag Search Items Browse Map Sort by: Title Creator Date Added / 2 pages Water exiting Roberts Tunnel 1960 1960-01-11 Site preparation for Keystone Bridge in Bailey, Colorado Simmons, W. P. 1985 Shawnee community center construction, 1950s 1950-1960 Several men shown conducting site preparation for Keystone Bridge in Bailey, Colorado Simmons, W. P. 1985 Roberts Tunnel surge chamber 1960 1960 Roberts Tunnel surge chamber 1960 1960 Roberts Tunnel 1959-07-30 Laying track in Roberts Tunnel 1957 1957-12-05 Keystone Bridge frame and girders shown at construction site with men in the background Simmons, W. P. 1985 Group outside of East portal of Olympus Tunnel 1950 1950 Sort by: Title Creator Date Added / 2 pages Output Formats atom, dc-rdf, dcmes-xml, json, omeka-xml, rss2