Sidewalks in the general area of Mt. Lebanon near Foster Elementary School are getting an upgrade. A resolution approved Tuesday by Mt. Lebanon commissioners calls for the replacement of deteriorated slabs, as determined by the public works department to be potential tripping hazards, on 11 streets in the southeastern part of the municipality, including most of the ones named after World War II heroes. Property owners, as the parties responsible for the sidewalks, will be assessed for the cost involved. The municipality pays for work on land it owns. Commissioner Craig Grella voted against the measure. During the discussion session preceding the regular commission meeting, he and some of his colleagues questioned whether the municipality could foot the entire bill.