Hyoung Chang, The Denver Post
Construction of the Central 70 project nears an upcoming shift of all six lanes of Interstate 70 traffic from an old raised viaduct, shown at upper left, to a new below-grade roadway, right, between Brighton and Colorado boulevards. Construction work was photographed on May 11, 2021. The “Mile High Shift” will allow for demolition of the viaduct and construction of the rest of the lowered highway. 
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The Colorado Department of Transportation's increasing use of untraditional contracting approaches for large highway projects has been hampered by problems with how the deals are awarded, negotiated and managed, state auditors found in a recent report.
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