Wednesday, March 16, 2016

CDOT Studies Rock Shed for Glenwood Canyon Rockfall

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This approach seems like a non-starter to me. It would only cover 400 feet of roadway at a cost that will probably be more than $50 million based on the only project of this type, Big Sur's 245 foot rock shed at $39 million.The visual impact of a rock shed would pretty much negate all the awards the I-70 design team received for environmental sensitivity.  Construction of a tunnel would probably be a less expensive alternative to a rock shed based on the studies done for Vail, would reduce the visual impact and could be done with minimum disruption to traffic during its construction. The least expensive approach would be to monitor the cliff face at mile 125 and design preventative rock scaling projects on an as-needed basis.

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