The Port of Hood River is developing a schedule for live testing of the Interstate Bridge lift span, with the hope of beginning in early August.  The lift span has not been in operation since a suspected allision with a boat hitting a bridge pier last September.  Port Executive Director Michael McElwee says the hope is to commence with testing in the next couple of weeks.  At issue is making sure the bridge lift span can raise up and come back down in the proper balance.  The Port recently hired an engineering firm with more expertise in bridge lift spans to handle the testing.