By 1967, the route had been paved, and had been rerouted to more of the modern route.
In 1958, the route was rerouted in Voca, shortening its length by 0.1 miles.
On May 21, 1940, the route was minorly rerouted.
The main route was rerouted onto the bypass, with the downtown alignment becoming US 65 Business.
The busway was officially opened on November 20 2009 and route 196 was rerouted immediately.
The main route was rerouted around town along a new four-lane bypass in 2012.
The route was rerouted to bypass downtown New Castle in the 1980s.
By 1946, the route was rerouted in an Area northeast of Denver.
The route was rerouted in 1968 from US 285 to I-80S (now deleted).
The route was then rerouted several times during the 1990s.
