UPDATE: Major rockfall mitigation work has just begun on Colorado Highway 3 in Durango, prompting an immediate two-week closure of the road. The Colorado Department of Transportation (CDOT) confirmed that the closure, which started on Monday, March 6, 2023, is essential for ensuring the safety of motorists as crews work to repair a damaged retaining fence.
Authorities report that rocks tumbling from cliffs above Highway 3 have compromised the existing safety measures. Regan French, a geohazards geologist with CDOT, likened the situation to receiving an unexpected holiday gift, as the need for repairs was identified shortly before the New Year. “It was like a day or two before Christmas,” French remarked, highlighting the urgency of the situation.
The retaining fence, designed to catch falling rocks, had withstood the impact but required reinforcement after sustaining damage. French emphasized the necessity of keeping the road closed during repairs, stating, “It’s not really safe for anyone to travel while this fence is completely open.”
CDOT is collaborating with Apex Rockfall Mitigation LLC from Grand Junction for this critical project. Workers have already begun the first phase, which involves removing loose rocks from the cliff face to enhance safety for those repairing the fence. French explained, “Dropping loose rocks is the first phase of the project. That makes it safer for workers repairing the fence.”
The second phase will involve drilling new anchors into the hill to secure new support posts for the retaining fence. These posts will be anchored with grout and cable, enhancing the structural integrity of the safety measures. “We opted to use an excavator with a breaker mounted onto it so that the person in the excavator can work while the guys on the slope are drilling,” French added.
The scope of rockfall mitigation in Colorado is extensive, as the mountainous terrain poses significant hazards. French noted, “Colorado has got to be one of the No. 1 states that has to deal with rockfall mitigation,” underscoring the importance of this project. The CDOT Geohazard Program is dedicated to managing these risks, continuously cataloging slopes across the state to prioritize safety measures.
While the highway is closed, CDOT is also taking the opportunity to perform additional maintenance, including sealing cracks in the road surface. This proactive approach aims to enhance the overall safety and longevity of Highway 3 for travelers.
The project is anticipated to conclude by March 20, 2023, with CDOT committed to keeping residents informed throughout the process.
Residents and motorists in the area are urged to seek alternate routes during this essential work. Stay tuned for further updates as crews continue to tackle rockfall hazards and ensure the safety of Colorado roadways. Share this article to keep others informed about the ongoing developments in Durango!
