Historic Communities in the I-70 / Clear Creek Expansion Corridor

Year Listed: 2005
County: Clear Creek County
Construction Date: Various
Threat When Listed: Highway Expansion

Numerous communities abutting, sometimes straddling I-70 in the Clear Creek Valley from Idaho Springs to Graymont attest to the 19th and early 20th century history of mineral, milling, timber and railroad industries in Colorado. Idaho Springs has been designated a National Register District and Georgetown/Silver Plume is a National Historic Landmark District. Hundreds of other structures and sites in the area are believed eligible for the State and National Registers of Historic Places.

Continued monitoring, outreach and participation in Section 106 review are needed for I-70 projects.

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The 2017 update, Preservation for a Changing Colorado, resulted from a partnership between Colorado Preservation and History Colorado and Colorado Preservation, Inc. Prepared by Clarion Associates, the new report and accompanying website document the economic benefits of rehabilitation projects, analyzes property values and neighborhood stability in local historic districts, and summarizes the increasing impact of heritage tourism, private preservation development and the success of Colorado’s Main Street program. In a key finding, researchers found that for every $1 million spent on historic preservation in Colorado leads to $1.03 million in additional spending, 14 new jobs, and $636,700 in increased household incomes across the state! The 2017 report also considers the important role preservation plays in helping Coloradans provide new spaces for creative communities and co-working, create and sustain meaningful places, respond to the state’s changing demographics, and address climate concerns. Click Here to see the full report, "Preservation for a Changing Colorado".