COLUMBUS, Ind. (AP): The owner of a rail line through southern Indiana is planning a $90 million project to replace an aging bridge and make improvements over more than 100 miles of track.
 
  Officials of the Louisville & Indiana Railroad say the project will allow it freight trains to go faster through Columbus and other cities along its route that generally parallels I-65.
 
  Company president Michael Stolzman says trains using the route have become longer recently as they are carrying more finished vehicles and auto parts from Kentucky to Chicago.
 
  The trains can currently only go 10 mph near Columbus because of the condition of a nearby 100-year-old bridge over the Flat Rock River. The company is waiting federal approval of the upgrade project.