UPDATE: Colorado Highway 3 in Durango is closed for urgent rockfall mitigation work that began on January 2, 2024. The Colorado Department of Transportation (CDOT) is taking swift action after rocks falling from cliffs have damaged a retaining fence designed to protect motorists.
This critical closure affects the southern portion of Highway 3, which runs alongside the scenic Animas River. Workers are expected to spend the next two weeks repairing the fence and ensuring the safety of this vital route, with the project slated for completion by March 20, 2024.
Regan French, a geohazards geologist at CDOT, received the news of the damage just before Christmas, describing it as a gift from “Santa.” She explained that the retaining fence had performed its job by preventing rocks from reaching the road, but it still required reinforcement after sustaining damage from falling debris.
“We’re keeping the road shut for the entirety of this,” French stated, emphasizing the risks involved in the ongoing work. CDOT is collaborating with Apex Rockfall Mitigation LLC from Grand Junction to carry out this essential project.
The first phase of the mitigation involves workers rappelling down the sandstone cliffs to remove loose rocks that could pose further risks. This initial step is crucial for ensuring a safe working environment for crews tasked with repairing the damaged fence.
French explained, “The next phase will involve drilling new anchors for the metal posts supporting the retaining fence.” This process will use an excavator with a breaker, allowing workers to efficiently downsize rocks while simultaneously drilling new anchors.
Historically, rockfalls have been a persistent hazard along this route, making Colorado one of the top states needing rockfall mitigation efforts. French noted, “We are building an asset management platform to inventory every single slope across the state.” This proactive approach will help CDOT prioritize future maintenance projects based on mobility and safety.
While the highway is closed, CDOT is also taking the opportunity to conduct additional maintenance, including sealing cracks in the road surface. This dual-purpose approach aims to enhance the safety and longevity of Highway 3 for all drivers.
Residents and travelers are urged to stay updated on the project’s progress and potential detours. CDOT’s swift response underscores their commitment to public safety, with ongoing evaluations and improvements to maintain Colorado’s roadways effectively.
