Port of Hood River Commissioners received an assessment report indicating overweight trucks going over the Interstate Bridge are causing accelerated deterioration of the structure.  Commissioners indicated the need to be more diligent and rigorous in enforcing weight restrictions on the bridge.  Port Executive Director Michael McElwee says the effort will in large part involve education about the importance of observing the weight limits to prevent much lower limits from needing to be established.  Additional signage on the weight and speed limits will be part of the plan.  McElwee pointed out the Port does not have the ability to enforce, but they will work closely with the Oregon Department of Transportation weighmaster in Cascade Locks to deal with overweight trucks.  In other business, Port Commissioners approved the purchase of two-and-a-half acres adjacent to the recently acquired Lower Hanel Mill property.