In just 10 weekends last summer, a joint- venture contractor demolished and replaced 14 bridges on I-93 north of Boston. Using conventional methods, the work could have taken four years.
The $98.1-million design-build project—called the "93 Fast 14"—was part of the Massachusetts Dept. of Transportation's Accelerated Bridge Program. The 2010 blowout of two bridge decks, which required emergency repairs and caused massive traffic delays, in Medford, Mass., provided an opportunity to test the program in the field.