Glenwood Mudslides 2021

On July 29, Glenwood Canyon was closed due to a severe mudslide in the Grizzly Creek burn scar area. For weeks, CDOT highway maintenance personnel have been working to secure the roadway and protect life safety, but last weekend the combination of the fires from last summer and the extreme rain resulted in substantial damage to the roadway, necessitating a longer-term closure of the Interstate. Glenwood Canyon typically receives an average 2.4 inches of rain in July. Over the course of five days more than 4 inches of precipitation fell on the burn scar area. cdot

The United States Department of Transportation (USDOT) lists the construction of I-70 among the engineering marvels undertaken in the Interstate Highway system, and cites four major accomplishments: the section through the Dakota Hogback, Eisenhower Tunnel, Vail Pass and Glenwood Canyon. The Eisenhower Tunnel, with a maximum elevation of 11,158 feet (3,401 m) and length of 1.7 miles (2.7 km), is the longest mountain tunnel and highest point along the Interstate Highway System. The portion through Glenwood Canyon was completed on October 14, 1992. This was one of the final pieces of the Interstate Highway System to open to traffic, and is one of the most expensive rural highways per mile built in the United States. The Colorado Department of Transportation (CDOT) earned the 1993 Outstanding Civil Engineering Achievement Award from the American Society of Civil Engineers for the completion of I-70 through the canyon. I-70 in Colorado wikipedia

A pretty loving look at the civil engineering of the 7 miles of highway through Glenwood Canyon. article

See Shoshone Hydroelectric and Moffat Tunnel

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