Weekend motorists crawling through Interstate 70 in Clear Creek County already face plenty of obstacles, including crowded lanes, unexplained slowdowns and accidents.
But the newest challenge to drivers comes from above.
Ziplines shooting thrill-seekers back and forth between six-story towers in the Dumont to Idaho Springs areas are causing gawking among motorists on eastbound I-70, particularly in the Downieville-to-Dumont corridor.
It's clogging traffic on the weekends and making a bad situation worse, according to the Colorado Department of Transportation.
"We know slowing along that part of I-70 is greater than it was before the ziplines went in," said Stacey Stegman, CDOT spokeswoman. "And we are getting plenty of feedback from the public that traffic is slower there than this same time last year."