The Alaska Railroad (reporting mark ARR) is a Class II railroad which extends from Seward and Whittier, in the south of the state of Alaska, in the United States, to Fairbanks (passing through Anchorage), and beyond to Eielson Air Force Base and Fort Wainwright in the interior of that state. At one time in its history, it extended to the banks of the Yukon River northeast of Fairbanks. Uniquely (for the US), it carries both freight and passengers throughout its system, including Denali National Park. The railroad has a mainline over 656 miles (1,056 km) long and is well over 500 miles (800 km) including branch lines and siding tracks. It is currently owned by the state of Alaska. The railroad is connected to the contiguous 48 via three rail barges that sail between the Port of Whittier, Al