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When it comes to length, the Zakim is more modest: Just 1,457 feet, or slightly more than a quarter-mile. Drivers moving at 55 m.p.h. will cross the bridge in just 20 seconds. So why was such an elegant, expensive structure used to span such a short distance? The Zakim's cable-stayed design put no support columns into the Charles River, leaving the busy waterway as open as possible to boaters and marine life.
Globe Staff Photo / David L. Ryan |
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