The stretch from I-678 (Van Wyck Expressway) east to the JFK Expressway is designated but not signed as I-878 by the Federal Highway Administration. This makes I-878 the shortest three-digit Interstate Route and the shortest Interstate Highway in the Interstate Highway System. This section of NY 878 only has route designations for the eastbound lanes. The New York State Department of Transportation (NYSDOT) designates I-878 as the stretch of NY 878 from the Van Wyck Expressway east to the 150th Street underpass. The entire segment, including the unsigned I-878, is maintained by the NYSDOT.