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Why Metro Detroit’s most ordinary freeway is actually a big deal

Why Metro Detroit’s most ordinary freeway is actually a big deal
Photo: WDIV ClickOnDetroit (NBC) - Local News · view original

Why does nearly every freeway in Metro Detroit have a weird trench section? The answer is the Davison Freeway, America’s first urban below-grade freeway in the United States. Leave it to the Motor City to innovate when it comes to cars, right? The design is called a depressed freeway. It separate...

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