Prior to our 159th Street improvements between Metcalf and Nall, Blue Valley High School had been experiencing traffic congestion on 159th Street for an extended period of time. Safely making left-hand turns out of the school’s entrances during peak hours was becoming increasingly difficult. Cars were often stopped for long periods of time, forcing other vehicles to back up into the parking lot. Those students who walked to school also encountered challenges finding a safe place to cross.