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I Didn't Know That - Season 1 Episode 5 Roads

Trailer
Did you know that just 1km of three-lane motorway costs £13 million to build? But what are our roads made of and what makes them so strong?

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First Air Date: Oct 05, 2007

Last Air date: Jun 24, 2010

Season: 3 Season

Episode: 30 Episode

Runtime: 30 minutes

IMDb: 0.00/10 by 0.00 users

Popularity: 0.2484

Language: English

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