Rapid Rebuild for Collapsed Segment of Colo. Highway
The Colorado Dept. of Transportation hopes to have a half-mile-long collapsed section of eastbound U.S. Route 36 in Westminster rebuilt and reopened by October. While the mid-July slope failure remains under investigation, the agency believes a void in the four-year-old highway’s embankment opened a 10-ft deep sinkhole while also damaging an underlying retaining wall. The unaffected westbound lanes were deemed safe to temporarily handle two-way traffic. Emergency repair contractor Kraemer North America will drill caissons into bedrock, rebuild the retaining wall and replace existing backfill with geofoam. The collapse occurred in the initial phase of an upgraded corridor between Denver and Boulder, built as a public-private partnership in 2015.