(Hillsboro, OR)  --  Helvetia Road is closed between Northwest Grossen Drive and Northwest Dierdorff Drive after a dump truck carrying a tall load crashed into a railroad trestle.  Police say the closure will likely last several days and the railroad tracks are also closed.  The driver of the dump truck reportedly failed to lower the truck's dump bed before passing under the trestle.  The driver suffered minor injuries and was later cited for the incident.