Why Alaska's Roads Keep Sinking | The Engineering Battle Against Permafrost
Why do highways in Alaska keep sinking, cracking, and becoming uneven—even after being rebuilt? The answer lies beneath the road. Hidden below the asphalt is permafrost, permanently frozen ground that has remained frozen for thousands of years. But every summer, heat from the road slowly melts the ice underground, causing the entire highway to sink. In this documentary, discover how engineers fight one of the toughest construction challenges on Earth using thermosyphons, advanced drainage systems, insulated roadbeds, and cutting-edge engineering technology. From giant construction projects to hidden underground science, this is the incredible story behind Alaska's disappearing highways. 👍 Like • 💬 Comment • 🔔 Subscribe to Mega Structure World for more documentaries about engineering, mega structures, and extreme infrastructure. #Alaska #AlaskaHighway #Permafrost #Engineering #RoadConstruction #CivilEngineering #Infrastructure #ExtremeEngineering #Documentary #MegaStructures #MegaStructureWorld #DiscoveryStyle
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