The Port of Hood River says there will be intermittent single-lane closures on the Hood River-White Salmon Interstate Bridge on Wednesday from noon to 10:00 p.m. to allow for lift span testing. The closures may cause delays of up to 15 minutes or more depending on traffic conditions. In addition a full bridge closure will occur Wednesday night between 10 p.m. and midnight, lasting about 20 minutes. Another full bridge closure is scheduled for Thursday morning at 5 a.m., lasting approximately one hour. That closure may be extended based on the findings during the lift span testing. Hamilton Construction Co. will be conducting wire rope inspections, and Wiss, Janney, Elstner Associates, Inc. will be performing lift span testing.