The Brief Midway International Airport has started a $47 million project to improve its main runway and safety systems. Officials say the project was planned before a close call on the runway in February, and most work will happen at night. It’s summer travel season and Midway International Airport is undergoing improvements in runway safety. What we know:The $47-millon rehabilitation of Runway 13C/31C includes repairing the main runway and its intersecting taxiways. What they're saying:Runway safety improvements come at a good time, as they go with all the other improvements inside the airport.