Port of Hood River Executive Director Kevin Greenwood says this morning that an engineering recommendation for the Hood River-White Salmon Interstate Bridge will be made at 1 p.m. this afternoon.  The bridge remains closed after a semi-truck with a flatbed trailer carrying a large excavator with a boom on the back sliced through a number of beams for the lift span of the bridge on Thursday.   Greenwood says engineers are allowing the American Cruise Line ship and other vessels to travel under the bridge, but the lift will remain inoperable for the foreseeable future. Greenwood says the semi approached the lift from the north at about 11:45 Thursday morning, but the bucket on the back of the excavator was not fully down, and its joints started slicing through the upper members of the bridge above the travel lanes.  Greenwood added there is no danger of the lift span falling into the river, as it has supports underneath it as well.  There were no injuries in the accident.