There will be intermittent, single-lane closures of the Hood River-White Salmon Interstate Bridge between the hours of 7:30 a.m. and 3:00 p.m. weekdays starting on Monday through April 2 for semi-annual maintenance and repair welding to the steel grate bridge deck.  Multiple Port crews will be on the bridge during those hours and flaggers will direct traffic around the moving work zones.  Motorists should expect delays of approximately 15-20 minutes.  Since the bridge’s narrow traffic lanes and lack of shoulders create a very compact work zone, motorists are urged to drive slowly and with extreme caution for worker safety, and to avoid looking directly at the welding arc light as they pass the work shield.