The airport at nearby Deadhorse is the primary means of public transportation to the North Slope. The state-owned asphalt and gravel airstrip at Deadhorse is 6,500' long by 150' wide. A 5,000' by 100' wide private gravel airstrip is owned and maintained by ConocoPhillips Alaska, Inc. A state-owned heliport is located at Prudhoe Bay. The Dalton Highway is used year-round by trucks to haul cargo to the North Slope. There are no services beyond this point, and the highway is hazardous during winter months.