The Federal Highway Administration (FHWA), in cooperation with the State of Hawaii Department of Transportation, Highways Division (HDOT), began to evaluate undertakings involving the use and/or occupancy of the former Oahu Railway and Land Company (OR&L) right-of-way (ROW). The former OR&L ROW was transferred from the federal government to HDOT in 1980, and the Deed stipulates that "all licenses, permits or easements authorizing use or occupancy of the 40' railroad ROW will be issued only subsequent to the written approval of the Hawaii State Historic Preservation Officer and the written authorization of the Hawaii Division Administrator FHWA." This portion is 40 feet wide and spans from central Waipahu to the Ulehawa Stream in the vicinity of Mohihi Street in Nanakuli.