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What's Actually Under the Road You Drive On
A modern highway isn't just asphalt on dirt — it's a three-foot-deep precision composite designed with physics models, GPS-guided machines, and climate-matched chemistry. This episode breaks down the hidden layers beneath the pavement: from compacted subgrade to sacrificial wearing course, the shift from empirical to mechanistic-empirical design, and the preservation strategies that can save billions. If you've ever wondered what makes a road last 30 years instead of 8, this is the episode for you. Episode 3978 — myweirdprompts.com/n/3978 (permanent short link: myweirdprompts.com/745662)
The skinny
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