Now that the obstacle course of cones and detours is starting to be removed from the Parkway and the expressway, we can finally take stock of what this road work accomplished. PennDot undertook the project to reconstruct seven aging crossings between 18th and 22nd Streets. Each span over 676 was completely rebuilt to last 75 years. Though many of the improvements are invisible, motorists will no longer have to contend with torrents of water running down the underside of the deteriorating bridges and crusts of white efflorescence.