The last pieces of US 20 in the state to be paved, in 1938, are also the last pieces to be bypassed, nearly 75 years later.
This is a slight twist on the usual process. New 20 is going to open before the ribbon cutting. From the Iowa DOT, emphasis theirs:
The newly completed segment begins at the intersection with Iowa 4 near Rockwell City in Calhoun County and continues west to U.S. 71 near Early in Sac County. The road is scheduled to open to traffic Monday, Nov. 19, at noon. The celebratory event will follow on Wednesday.
That celebratory event begins at 10 AM.
On a personal note: Yikes. That means, for me, VERY early driving. Maybe the governor would let me carpool with him.