This Steel Net Stops a 25-Ton Block at 71 MPH. Inside Extreme Rockfall Protection Engineering.

A Colorado highway closure can cost nearly $1 million an hour. So how do engineers keep falling rocks and landslides from destroying roads and railways? Explore extreme rockfall protection and slope stabilization, from steel nets that stop a 25-ton test block at 71 mph to crews hanging from ropes high above mountain highways. See helicopters deliver barriers, workers remove unstable rock, and drills install deep rock bolts and soil nails. Discover how steel mesh, shotcrete, drainage systems, and debris barriers protect cliffs, tunnels, railroads, and open-pit mines. Travel from Colorado to the Alps, Germany, and New Zealand, then watch engineers crash-test rockfall walls with the Wacky Racer. This is the hidden engineering that keeps traffic moving beneath dangerous mountains. TIMELINE: 0:00 How Steel Nets Stop Deadly Mountain Rockfalls 1:51 Helicopters Install Giant Barriers Above Mountain Roads 3:54 Crews Deliberately Knock Loose Rocks Off Cliffs 5:53 Deep Rock Anchors Hold Crumbling Mountains Together 8:34 Steel Mesh Wraps Cliffs Above Active Railways 10:13 Sprayed Concrete Creates New Protective Cliff Surfaces 12:04 Heavy Rain Turns Mountains Into Dangerous Mudslides 14:57 Giant Mines Stabilize Dangerous Walls With Steel 16:02 Engineers Crash Test Rockfall Walls At Speed 17:45 Why Unnoticed Safety Work Protects Busy Highways HASHTAGS: #ExtremeEngineering #RockfallProtection #LandslidePrevention #SlopeStabilization #HighwayEngineering #CivilEngineering #GeotechnicalEngineering #HeavyMachinery #MountainRoadConstruction #RockfallBarriers #ConstructionDocumentary #YouCanDoTV --------------------------------- ⚠️ Copyright Disclaimers • We use images and content by the YouTube Fair Use copyright guidelines • Section 107 of the U.S. Copyright Act states: “Notwithstanding the provisions of sections 106 and 106A, the fair use of a copyrighted work, including such use by reproduction in copies or phonorecords or by any other means specified by that section, for purposes such as criticism, comment, news reporting, teaching (including multiple copies for classroom use), scholarship, or research, is not an infringement of copyright.” • This video could contain certain copyrighted video clips, pictures, or photographs that were not specifically authorized to be used by the copyright holder(s), but which we believe in good faith are protected by federal law and the fair use doctrine for one or more of the reasons noted above.