CEDAR RAPIDS — Roadside litter continues to clog entryways to Cedar Rapids despite steady efforts to clean it up, and matters could worsen if the state eliminates a 5-cent deposit on carbonated and alcoholic beverage containers, officials said. Stark Enterprises Inc., of Fairfax, a contractor hired by the city of Cedar Rapids, has collected 165 bags of trash from along Interstate 380 since Christmas, and “it doesn’t look like they’ve done anything,” Mark Jones, Cedar Rapids solid waste superintendent, said during a meeting of the Cedar Rapids Linn County Solid Waste Agency earlier this month.