Stretch of tunnel called full of defects - By Sean P. Murphy, The Boston Globe
An inspection by Big Dig officials has found a 1,500-foot stretch of the tunnel near the North End to be the most problem-plagued area of the project, with weaknesses in the tunnel walls that exceed even those in the section of tunnel that erupted in a gushing leak last September.
The North End stretch of the tunnel is so pocked with construction defects -- weaknesses in the walls -- that project officials have brought in a new engineering firm to conduct an independent evaluation.