Bolt Blues. Ted Williams Tunnel remains partially closed pending fix of slipped bolts (above).(Photos Courtesy of the Massachusetts Governor’s Office) The political fallout continues in Boston following a fatal air-plenum collapse July 10 in the Interstate 90 cut-and-cover connector tunnel portal. A redundant support system is being readied while the governor prepares to possibly fire the oversight agency chairman. The accident that dropped 10 tons of concrete onto the road killed a local woman and further tarnished the $14.6-billion Central Artery/Tunnel’s image. Gov. Mitt Romney (R) has scheduled a closed hearing for July 27 to strip Matthew J. Amorello of