Season 12, Episode 35 Mountain Roads
First Aired: July 21, 2006
Mountain roads are the subject. Included: the Donner Pass in the Sierra Nevada mountain range; Pikes Peak in Colorado; The Going-to-the-Sun Road in Montana's Glacier National Park; the Eisenhower Memorial Tunnel in Colorado; and the Blue Ridge Parkway running through Virginia, North Carolina and Tennessee. Also: the technology used to keep I-80 open during the severe winter storms.
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- Premiered: December 10, 1993
- Rating: TV-PG
- Premise: Architectural and engineering landmarks of the 19th and 20th centuries. The programs previously aired on A&E's `Time Machine' series. Among the subjects: the Brooklyn Bridge, the Maginot Line, the Erie Canal, the Aswan Dam and the Trans-Siberian Railroad. (more)