Seems the point on I-57 was manually updated, and not copied directly from the I-294 file.
il.i057 349 (41.618404,-87.687141) NMP il.i294 8 [alt: ['+7']] (41.618437,-87.687293)
il.i294 8 [alt: ['+7']] (41.618437,-87.687293) NMP il.i057 349 (41.618404,-87.687141)