Christo said Wednesday that nearby railroad tracks are being cleared along the project's route and work is beginning to mitigate impacts to bighorn sheep. He also has an upcoming exhibit in Germany of a 295-foot air-filled fabric bubble that will help raise funds for Over the River.
Opponents contend Over the River poses environmental, safety and economic hazards.
Christo was in Denver on Wednesday for an exhibit at Metropolitan State University of Denver's Center for Visual Art of two sketches he donated to Colorado.
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