The $4 billion reconstruction and widening of the Tri-State Tollway, or I-294, is continuing. The focus now will be on a stretch of the highway between Wolf and St. Charles roads, and, farther south, stretches between I-55 and 75th Street and between LaGrange Road and 95th Street, the Tollway said. Lanes and ramps will be closed in those areas at various times throughout the year.