honolulu h-1 1 (August 2022) 29th Floor view of Honolulu. Condos and apartment buildings on either side of H-1. In the distance on the hillside, that's St. Louis Heights and Tantalus, right? It's formerly Interstate H-1. Some still refer to it as Lunalilo Freeway It runs between Kahala (east) and Kunia (west). This wiki article is pretty good: https://en.wikipedia.org/wiki/Interstate_H-1#History