BEMIDJI — Progress to redevelop Bemidji's downtown rail corridor is taking big strides forward. Of course, the corridor has a YMCA facility and a new Marriott Hotel to look forward to. But now, the corridor will potentially have a new park as well, as Greater Bemidji applied for and should receive federal funding to construct "Gateway Park." No schematics or designs are publicly available yet, as Gateway Park's design is currently in development…