There will be two weeks of 12-hour nighttime closures to accommodate repairs to the Hood River-White Salmon Interstate Bridge starting the night of July 8.  Kiewit Construction, which will be handling the repair of the six truss members damaged by an excavator being hauled on a flatbed trailer by a large truck last Thursday, says the bridge will be closed daily from 7 p.m. to 7 a.m. starting on July 8, and continuing through July 21.  Until the repairs are completed, only passenger vehicles are being allowed on the bridge.  The Port of Hood River says after the repairs are done, normal vehicular traffic operations will resume.  In addition, once the structural repairs are done, the bridge lift will be evaluated, and if it is not operable, a separate study will be conducted, and additional bridge closures may be necessary.