 After the competition reached what has been described as ridiculous levels, Hariman died in 1909 and an agreement was reached that the extension was to be jointly operated with a Union Pacific subsidiary, the Oregon-Washington Railway & Navigation.This southern extension relied upon the Oregon Trunk Rail Bridge – the "fall bridge" – constructed just downstream of Wishram at the waterfall on the Columbia.James J. Hill inaugurated this route, driving a golden spike in Bend in 1912.