The Port of Hood River will carry out multiple lifts of the Hood River Interstate Bridge lift span throughout the daylight hours of next Thursday through Saturday.  Each lift will require closure of both lanes on the bridge up to 30 minutes in duration.  Closures will occur between the hours of 7 a.m. and 4 p.m. on those three days.  Bridge users are strongly encouraged to plan for up to 40 minute delays or seek alternate routes during those hours.  The lifts are required for the Port’s contract engineers to inspect the bridge’s trunnions and conduct magnetic particle testing of the rack pinion shafts.  The trunnions are critical mechanical systems of the bridge’s lift span, with four located on each of the two bridge towers.  The magnetic particle testing is required to determine their condition and expected longevity of key components.