Construction of a steel screen to prevent rock slides onto the Historic Columbia River Highway just east of Rowena Crest is taking a bit longer than anticipated. The Oregon Department of Transportation had expected work to finish up by Friday, but now they expect to finish by Tuesday. Traffic is prohibited in the area while work is underway. The screen is covering problem rock face with steel mesh. It’s to prevent the kind of rock slide that happened last spring, putting motorists at risk and forcing a closure of the highway.