KTVU Second Look September 10, 2012
francisco bay you might say the bay bridge which opened in late 1936. but almost a decade earlier the dumbarton bridge began operation. the dumbarton was closed this past weekend for seismic work. but that's nothing compared to the project in the early 1980s that replaced the entire bridge. the new dumbarton opened in 1982. two years later, crews blew up the old structure that had carried cars for 52 years. >> reporter: the 57-year-old bridge is slowly but surely disappearing. and today a small crowd gathered to watch the certain dumbarton demise. the east tower went down today and y...