 N @-@ 88 was unofficially designated around 1937 , connecting from N @-@ 29 , to N @-@ 86 and N @-@ 19 in Bridgeport . The route remained relatively the same as the state highway system was officially designated . Before 1955 , Nebraska did not have an adequate legal instrument to define the state highway system . By 1960 , N @-@ 19 was renumbered to US 385 , and US 26 was rerouted north near Bridgeport . The old alignment became part of N @-@ 92 . Two years later , N @-@ 29 was renumbered to N @-@ 71 . Between 1981 @-@ 82 , a road appeared on the official state map , extending from WYO 151 to N @-@ 71 . That road became part of N @-@ 88 by 1986 . No significant changes have been made since . 
