
Year : 1963
State : WY
Inter 1 :I80
Inter 2 :I80
Wyoming - Interstate Route 80 a few miles east of Laramie was designed with independent roadways to overcome economically the difficult topography.

Year : 1965
State :WY
Inter 1 : I90
Inter 2 : I90
Interstate Route 90 traverses the snow-clad hill of northern Wyoming between Buffalo and Gillette.

Year : 1963
State : WY
Inter 1 :I80
Inter 2 :I80
Interstate Route 80 a few miles east of Laramie, Wyo., was designed with independent roadways to overcome economically the difficult topography.